ICP - Final Exam - Chapter 2
A sports car that maintains a constant velocity of 120 km/h for 1/2 (0.5) hour has an acceleration of...
0 because of no change in velocity.
A freely falling object has an acceleration of 10 m/s2. One second later its acceleration will be...
10 m/s2.
Toss a ball vertically upward and its acceleration at the top of its path is...
10 m/s2.
A freely falling object has an instantaneous speed of 10 m/s. One second later its speed will be...
20 m/s
Johnny Test's average speed when running a distance of 2 km in 1/2 (0.5) hour is...
4 km/h.
A lightning bug flying at 2 m/s encounters a 2-m/s breeze blowing in the same direction, giving it a resulting speed over the ground of...
4 m/s
When a boll rolls down an inclined plane and gains 4 m/s each second of rolling, its acceleration is...
4 m/s2
A 800-N man stands at rest with his weight evenly distributed on a pair of weights scales. The reading on each scale is...
400-N.
A cart is pushed to the right by a 10-N force. At the same time, a boy pushes it to the left with a 5-N force. The net force exerted on the cart is...
5 N to the right.
When Kaya sprints 100 meters in 20 seconds, her average speed is...
5 m/s
A freely falling boulder has a speed of 30 m/s at one instant. Exactly 2 seconds later, its speed will be...
50 m/s.
The frictional force on a sliding object is 500-N. The applied force needed to maintain a constant velocity is...
500 N.
A 100-N falling object encounters 40-N of air resistance. The net force on it is...
60-N.
The normal (support) force acting on a 9-N book resting on a horizontal surface is...
9-N.
A heavy and a light ball are dropped at the same time from a high tower. The ball to reach the ground first, assuming no air resistance, will be
Both of them together.
What is the Equilibrium rule?
EF=0
An empty glass rests on a table with a certain support force. When grape juice is added to the empty glass, the normal force...
Increases.
What is the units for weight?
Newtons
Does friction act the same direction as the applied force?
No
Was Aristotle the first to be credited for the concept of inertia?
No
Aristotle asserted that motion was characterized by...
Violent and Natural Motion.
Are mass and weight proportional to each other?
Yes
Would an automobile battery have more mass than a scrunched-up king-size pillow?
Yes
Instantaneous velocity is...
a velocity at any instant, what a speedometer reads, and a cevtor quantity.
Billy Joe stands at rest on a pair of bathroom scales. The scales reading will ALWAYS
add to equal his weight.
An object at rest, moving at constant velocity, and are in equilibrium are all in common because...
all have 0 acceleration.
A heavy ball hangs by a strong, with a second string attached to its bottom. A quick pull on the bottom strong breaks the....
bottom string.
During each second, the speed of an object in free fall...
increases by the same amount.
An object having twice as much mass as another object also have twice as much...
inertia.
When the speed of a ball increases by the same amount each second, its acceleration...
is constant.
The force with which you press downward on a heavy coiled spring...
is equal to the force pressing back on you.
When Galileo rolled a ball down and up an incline, he found that the ball rolled nearly to...
its initial height.
What are the units for mass?
kilograms (kg)
A block of wood will weigh
less on the Moon.
At the end of 2 seconds, Benny Lenny freely falling from rest has a speed of...
more than 10 m/s.
The equilibrium rule applies to...
objects or systems at rest and in uniform motion in a straight line.
An orange rolling on a level surface would eventually come to rest because...
of friction.
Friction is common in...
solids, liquids, and gases.
An object accelerates when it...
speeds up, slows down, changes its direction of motion.
The net force acting on an object is...
the combination of all forces acting on it.
As Sally Sue pushes a table to the right, friction between the floor and the table acts toward...
the left.
When Nellie pushes a crate across a level floor at constant velocity, friction between the crate and the floor is...
the same amount as her pushing force.
Compared with an apple's mass on Earth, the mass of the same apple on the Moon is...
the same.
A heavy ball suspended by a string has a second string attatched to its bottom. A slow pull on the bottom string breaks the...
top string.
The quantity that best relates to the amount of space an object takes up is...
volume.
Toss a ball vertically upward and its speed at the top of its path is...
zero.