Newton's Laws of Motion
the forces are balanced
During a tug-of-war competition, neither team is able to gain an advantage. Which of the following explains the forces in this situation? - the forces are balanced - the forces are overcome by air friction - the mass of the rope cancels the forces being exerted on it - the forces are unbalanced
action
For every __________ force there is an equal and opposite reaction force.
equal
For every action force there is an __________ and opposite reaction force.
opposite
For every action force there is an equal and __________ reaction force.
reaction
For every action force there is an equal and opposite __________ force.
mass
Force = __________ x acceleration
acceleration
Force = mass x __________.
Newton's Third Law
I am one of Newton's Laws that always involves two objects and two forces. Which Law am I? - Newton's First Law - Newton's Second Law - Newton's Third Law
inertia
If an object has mass it also has __________.
gravity
If the object is NOT moving, where is the acceleration coming from to cause the force to increase as the mass increases? - friction - spin of Earth - gravity - movement around the Sun
Law of Inertia
Newton's First Law is also called the __________ of __________.
mass
The less __________ an object has the less force it will take to move the object from rest or stop the object once it is in motion.
force
The less mass an object has the less __________ it will take to move the object from rest or stop the object once it is in motion.
rest
The less mass an object has the less force it will take to move the object from __________ or stop the object once it is in motion.
stop
The less mass an object has the less force it will take to move the object from rest or __________ the object once it is in motion.
mass
The more __________ an object has the more force it will take to move the object from rest or stop the object once it is in motion.
force
The more mass an object has the more __________ it will take to move the object from rest or stop the object once it is in motion.
rest
The more mass an object has the more force it will take to move the object from __________ or stop the object once it is in motion.
stop
The more mass an object has the more force it will take to move the object from rest or __________ the object once it is in motion.
inertia
The natural tendency of an object to remain in a state of rest or in uniform motion in a straight line is called __________.
inertia
The tendency of an object to resist a change in motion is called __________.
13,000 N
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a A 1,400 kg trolley car accelerates from rest at 10 m/s². If the force of air resistance is 500 N and friction is 500 N, how much force will be required to push the trolley forward?
1 m/sec²
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a A 3,000 kg tow truck is pulling a 2,000 kg automobile. The tow truck is pulling the vehicle with a force of 5,000 N. What is the acceleration of both vehicles?
625 m/sec²
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a A 50 N force is applied to three different masses of balls. - ball 1 is .08 kg - ball 2 is .05 kg - ball 3 is .04 kg What would be the acceleration of ball 1? Round your answer to the nearest whole number.
1,000 m/sec²
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a A 50 N force is applied to three different masses of balls. - ball 1 is .08 kg - ball 2 is .05 kg - ball 3 is .04 kg What would be the acceleration of ball 2? Round your answer to the nearest whole number.
1,250 m/sec²
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a A 50 N force is applied to three different masses of balls. - ball 1 is .08 kg - ball 2 is .05 kg - ball 3 is .04 kg What would be the acceleration of ball 3? Round your answer to the nearest whole number.
20 N
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a A ball of rubber bands has a mass of 10 kg. If you roll the ball with an acceleration of 2 m/s² how much force did you use to roll the ball?
100 N
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a A camper hoists a 20 kg backpack straight up the side of a 20 m tall cliff. If the camper hoists the backpack from rest and it accelerates to a velocity of 5 m/s² how much force was used to lift the backpack?
law of inertia
When a car suddenly stops, the objects in the back seat are thrown forward. This is due to __________. - law of gravitation - law of force and acceleration - law of inertia - law of action / reaction
pushing
When you push a crate up a ramp the crate is __________ back on you.
Law of force and acceleration
Which of Newton's Laws describes the relationship between the mass and force? - Law of inertia - Law of force and acceleration - Law of action / reaction - Law of thermodynamics
An object will remain at rest or in uniform motion in a straight line unless acted upon by an external, unbalanced force.
Which statement below is Newton's First Law of Motion? - If an object is acted upon by an external, unbalanced force the object will accelerate in the direction of the net force. - An object will remain at rest or in uniform motion in a straight line unless acted upon by an external, unbalanced force. - For every action force there is an equal and opposite reaction force.
If an object is acted upon by an external, unbalanced force the object will accelerate in the direction of the net force.
Which statement below is Newton's Second Law of Motion? - If an object is acted upon by an external, unbalanced force the object will accelerate in the direction of the net force. - An object will remain at rest or in uniform motion in a straight line unless acted upon by an external, unbalanced force. - For every action force there is an equal and opposite reaction force.
For every action force there is an equal and opposite reaction force.
Which statement below is Newton's Third Law of Motion? - If an object is acted upon by an external, unbalanced force the object will accelerate in the direction of the net force. - An object will remain at rest or in uniform motion in a straight line unless acted upon by an external, unbalanced force. - For every action force there is an equal and opposite reaction force.
My whole body doesn't sink into the sand because the sand is pushing back up against my foot. Newton's Third Law explains this situation.
You are on vacation on a beautiful beach. Everyday when you walk on the beach your foot presses into the sand and leaves a footprint, but you don't sink into the sand. Why does your whole body not sink into the sand and which of Newton's Laws explains this situation?
it would move forward
You are riding in a vehicle with a coffee cup on the dashboard while traveling 30 km/h. The vehicle makes a sudden stop to avoid hitting the car that has stopped in front of it. What would happen to the coffee cup? - it would move forward - it would move backward - it would stay stationary - it would move straight up
mass
__________ = Force / acceleration
acceleration
__________ = Force / mass
Force
__________ = mass x acceleration
friction
A force that will work against motion in every situation is...
stay constant
A rocket is traveling from Earth to Mars at 10,000 m/sec. If no outside force is applied to it, what will happen to its speed over the course of the trip? - speed up - slow down - stay constant - changes depending on mass
9,000 N
A roller coaster containing three cars is accelerating at 10 m/s² before it comes to an abrupt stop at the end of the ride. The mass of one cart is 300 kg. How much force was exerted on the roller coaster to bring it to a stop? F=ma
9.9 N
An experiment was conducted to see how the mass of an object affects the amount of force needed to hold it still on the ramp. How much force is needed to hold the 2 kg object?
inertia
An object with less mass has less __________.
inertia
An object with more mass has more __________.
60 lbs
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a After defeating the Colossus giant and saving Earth, Thor transported back to Asgard to capture his brother Loki. Upon arriving in Asgard Thor threw this hammer Mjölnir with a force of 270 N and an acceleration of 10 m/s² hitting him in the chest and knocking Loki on the ground. Loki tried to lift the hammer but the hammer can only be lifted by Thor. What is the weight of the hammer in pounds if 1 pound equals .45 kilograms? Hint: First find the mass then divide to convert! Round your final answer to the nearest whole number.
16 N
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a Calculate the force that must be applied to a 2 kg hockey puck to make it accelerate at 8 m/s² .
2,000 kg
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a Calculate the mass of a single engine airplane during takeoff when the trust of its engine is 500 N and the plane's acceleration is .25 m/s² .
12 lbs
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a During a heated battle between Captain America and the Red Skull, Captain America threw his shield with an acceleration of 10 m/s². His shield accelerated towards a brick wall, bounced off the wall, flew towards a truck, bounced off the truck, and smashed Red Skull in the skull with a force of 55 N. What is the weight in pounds of Captain America's shield if 1 pound equals .45 kilograms? Hint: First find the mass then divide to convert! Round your final answer to the nearest whole number.
2,000 m/sec²
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a During a recent baseball game a batter hit a baseball with a force of 600 N. What is the acceleration of the baseball if the baseball has a mass of .3 kg?
.5 kg
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a Humpty Dumpty sat on a wall. Humpty Dumpty was hit by a ball? The ball was kicked from a horse in the field that hit Humpty with a force of 4 N...for real! The ball traveled with acceleration to spare it traveled at 8 m/sec/sec, yep that's squared. What is the mass of the ball in kilograms, the mass of the ball that hit Humpty "WHAM"!
15 kg
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a If a 3 N net force accelerates a 15 kg mass at 2 m/s², what is the mass if the same object accelerates at .4 m/s² by a net force of 6 N?
59 N
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a Ironman is battling Whiplash on a racetrack in Monte Carlo. Whiplash has just "whip-lashed" Ironman. Surges of electricity are flowing through the electrified cables attached to Ironman's suit. To save himself and others Ironman pulls the cables and Whiplash towards him with a force of ______ N. Whiplash accelerates towards Ironman at .6 m/s². How much force is Ironman using to pull on the cables if Whiplash has a weight of 215 lbs (98 kg)? Round your final answer to the nearest whole number.
131 lbs
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a Spider-man swings through New York city to save Gwen Stacey from the Lizard. When Spider-man arrives he knocks out the Lizard, webs him, and hangs the Lizard from a light pole. Gwen Stacy asks Spider-man if he can carry her back to her parents apartment. Spider-man agrees, picks up Gwen Stacey with a force of 118 N, and swings her back to her apartment with an acceleration of 2 m/s². How much does Gwen Stacy weigh in pounds if 1 pound equals .45 kilograms? Hint: First find the mass then divide to convert! Round your final answer to the nearest whole number.
100 N
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a What is the force needed to give an object with a mass of 20 kg an acceleration of 5 m/s² ?
8 N
Use the correct formula below to solve the problem. F= ma a = F/m m = F/a What is the force needed to pull two dictionaries with a mass of 2 kg each across a science lab table at 2 m/sec² ?
Bird's wings pushing down on the air
What is the action force?
Earth pulling on the moon
What is the action force?
Foot pushing down on the ground
What is the action force?
Foot pushing down on the sand
What is the action force?
Gas explosion pushing up on the rocket
What is the action force?
Gravity pulling down on the book
What is the action force?
Man pushing down on the diving board
What is the action force?
Air pushing up on the bird's wings
What is the reaction force?
Diving board pushing up on the man
What is the reaction force?
Ground pushing up on the foot
What is the reaction force?
Moon pulling on the Earth
What is the reaction force?
Rocket pushing down on the gas explosion
What is the reaction force?
Sand pushing up on the foot
What is the reaction force?
Table pushing up on the book
What is the reaction force?