Newton's Laws worsheet
Newton's Second Law of Motion
The acceleration of an object depends on the mass of the object and the amount of force applied.
If the mass of either object of the objects becomes grater
The force of gravity increases
The lesser the force that is applied,
The lesser the acceleration
True or False: Your mass would be the same on the Moon as it is on the Earth. Explain your answer in complete sentences.
True . The amount of matter (substance) you possess will never change. Mass tells you how many particles you have.
What is acceleration due to gravity constant? Include units. (numeric value)
9.8 m/s2 Gravity is a force (pull) of attraction between masses. Measured in Newtons.
Gravity
A force of attraction between two objects that is due to their masses.
What is friction?
A force that opposes motion in objects that touch as they are moving past each other
Define mass
A measure of the amount of matter in an object Measure in Kg
Define weight
A measure of the force of gravity on an object
Newton's first law
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
The equation that is used to solve second law problems is
F=ma F=Force m=Mass=acceleration
. When you put on the brakes of your bike, the wheels stop turning. friction between the wheels and the road slows your bike to a stop. Which type of friction is this?
Sliding friction
True or False: Your weight would be the same on the Moon as it is on the Earth. Explain your answer in complete sentences.
False. REMEMBER: Weight is the measure of the gravitational force pulling on a mass. Due to the difference in gravitational pull, the weight will be less on the moon than on Earth due to the mass of the moon being less than that of the Earth.
What unit of measurement must be used with each variable?
F = kg.m/s2 (N - Newton) m = kg a = m/s2
Newton's Third Law of Motion
For every action there is an equal and opposite reaction
Gravity also increases if
If the objects move closer together
1. Newton's first law of motion is also known as the
LAW OF INERTIA
The factors that affect gravitational pull on an object are
MASS and DISTANCE
Factors that affect the amount of friction against an object are
MASS and ROUGHNESS OF SURFACE
What property of an object determines how much inertia it has?
Mass
Weight
Measured in Newtons W=mass (m) X acceleration due to gravity Fw=mxg
Which of the following has more inertia ? a. Bowling ball or Tennis ball b. Hammer or Feather
a) Bowling ball b) Hammer
What would you observe if you drop a cotton ball and a rock at the same time? B) Would it be different if you did the same occur if performed in a vacuum tube? Explain your answer
a) In Earth's atmosphere, the cotton ball would hit the ground after the rock due to air friction.. B) In a vacuum, the air is removed so the rock and cotton ball would fall at the same rate (9.8 m/s2)
. Listed below are ACTION forces. Tell the REACTION force.
a. Your bottom pushing on your desk seat: SEAT PUSHING UP ON YOUR BOTTOM b. A batting a baseball: BASEBALL HITTING THE BAT c. Your finger pressing on your phone screen while texting : PHONE SCREEN PUSHING BACK ON YOUR FINGER
Newton's first law says that
a. an object that IS NOT MOVING, or is at AT REST will stay at AT REST AND b. an object that IS MOVING will keep moving with constant VELOCITY which means at the same SPEED and in the same DISTANCE UNLESS c. an OUTSIDE force acts on that object.
What happens to the gravitational pull between two bodies when the distance between them increases?
decreases as distance increases.
If the same force is applied to an object with a small mass,
it will have a GREATER acceleration
If the same force is applied to an object with a large mass
it will have a LESSER acceleration.
Newton's third law states that forces must ALWAYS
occur in PAIRS
List the four types of friction
static: Friction at rest sliding: Friction as surfaces slide across each other rolling: Use of wheels, cylinders, ball bearings, etc. fluid: Involving liquid or gases
Newton's third law says
that every time there is an ACTION force, there is also a REACTION force that is EQUAL in size and acts in the OPPOSITE direction.
Newton's second law of motion is also known as
the LAW OF ACCELERATION
Newton's third law of motion is also known as
the LAW OF ACTION - REACTION
The greater the force that is applied,
the greater acceleration
Newton's second law says that
when an UNBALANCED force is applied to a MASS (OBJECT), it causes it to accelerate
