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AP Physics Conceptual Exam: Newton's Laws
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Gravity
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A 10 kg book and a 1 kg book are dropped in a vacuum. The force of gravity on the 10 kg book is...
10 times as much as the force of the 1 kg book
An object is propelled along a straight-line path by a force. If the net force were doubled, its acceleration would...
double
If an object's mass is decreasing while a constant force is applied to the object, the acceleration will...
increase
An object is pulled northward with a force of 10 N and southward with a force of 15 N. The magnitude of the net force on the object is...
5 N
The force of friction on a sliding object is 10 N. The applied force needed to maintain a constant velocity is...
10 N
A 10 N falling object encounters 4 N of air resistance. The magnitude of the net force on the object is...
6 N
A 10 N falling object encounters 10 N of air resistance. The magnitude of the net force on the object is...
10 N
An apple weighs 1 N. When held at rest above your head, the net force on the apple is...
0 N
An apple weighs 1 N. Ignoring air resistance, the net force on the apple when it is in free fall is...
1 N
Whenever the net force on an object is 0, its acceleration is...
0
When you stand at rest on a pair of bathroom scales, the reading on each of the scales will...
add to equal your weight
Hang from a pair of gym rings and the upward support force of each of the rings will...
add up to equal your weight
A car has a mass of 1000 kg and accelerates at 2 meters per second per second. What is the magnitude of the force exerted on the car?
2000 N
A tow truck exerts a force of 3000 N on a car, accelerating it at 2 meters per second per second. What is the mass of the car?
1500 kg
A girl pulls on a 10-kg wagon with a constant force of 30 N. What is the wagon's acceleration in meters per second per second?
3 meters per second per second
An object has a constant mass. A constant net force on the object produces a constant...
acceleration
A force of 1 N accelerates a mass of 1 kg at the rate of 1 meter per second per second. The mass of 2 kg acted upon by a force of 2 N is...
the same
A bag of groceries has a mass of 10 kg and a weight of about...
100 N
The mass of a pet turtle that weighs 10 N is about...
1 kg
The force required to maintain an object at a constant speed in free space is equal to...
0
An object following a straight-line path at constant speed...
has zero acceleration
Neglecting friction, a large block of ice and a small block of ice start sliding down an incline together. The heavy block will get to the bottom...
at the same time as the light block BECAUSE GRAVITY has the same effect on them
A push on a 1 kg brick accelerates the brick. Neglecting friction, to equally accelerate a 10 kg brick, one would have to push with...
10 times as much force
A 10 N block and a 1 N block lie on a horizontal frictionless table. To push them with equal acceleration, we would have to push with...
10 times as much force on the heavier block
A rocket becomes progressively easier to accelerate after launch from the earth mainly because...
the mass of the rocket decreases as fuel is burned
A rock is thrown vertically into the air. At the very top of its trajectory the net force on it is...
its weight
A rock is thrown vertically into the air. At the top of its path, its acceleration in meters per second per second is...
9.8
Suppose a particle is accelerated through space by a 10 N force. Suddenly the particle encounters a second force of 10 N in the opposite direction of the first force. The particle...
continues at the speed it had when it encountered the second force
A jumbo jet has a mass of 100,000 kg. The thrust of each of the four engines is 50,000 N. What is the jets acceleration in meters per second per second when taking off?
2 meters per second per second
A 1 kg ball is thrown at 10 m/s straight upward. Neglecting air resistance, the net force that acts on the ball when it is halfway to the top is about...
10 N
The brakes are slammed on a speeding truck and it skids to a stop. If the truck were heavily loaded so it had twice the total mass, the skidding distance would be...
the same
A skydiver of mass 100 kg experiences air resistance of 500 N. What is the diver's acceleration?
0.5 g
An object released from rest on another planet requires one second to fall a distance of 6 meters. What is the acceleration in meters per second per second due to gravity on this planet?
12 meters per second per second
A 10 kg block with an initial velocity of 10 m/s slides 10 meters across a horizontal surface and comes to rest. It takes the block 2 seconds to stop. The stopping force on the block is about...
50 N
An astronaut on another planet drops 1 kg rock from rest and finds that it falls a vertical distance of 2.5 meters in 1 second. On this planet the weight of the rock is....
4.9 N
A light woman and a heavy man jump from an airplane at the same time and open their identical parachute at the same time. Which person will get to a state of zero acceleration force?
Not enough info
A skydiver, who weighs 500 N, reaches terminal velocity of 90 km/h. The air resistance on the diver is...
500 N
An elephant and a feather fall from a tree through the air to the ground below. The force of air resistance is greater on the...
elephant
An astronaut on another planet drops a 1 kg rock from rest. The astronaut notices that the rock falls 2 meters straight down in 1 sec. On this planet, how much does the rock weigh?
4 N
A feather and a coin will have equal acceleration when falling through a vacuum because...
the ratio of each object's weight to its mass is the same
Action and reaction forces comprise the parts of...
a single interaction
An archer shoots an arrow. Consider the action force to be the bowstring against the arrow. The reaction to this force is the...
arrow's push against the bowstring
A player catches a ball. Consider the action force to be the impact of the ball against the player's glove. The reaction to this force is the...
force the glove exerts on the ball
As a ball falls, the action force is the pull of the earth's mass on the ball. The reaction force is the...
pull of the ball's mass on the earth
A person is attracted toward the center of the earth by a 500 N gravitational force. The force of attraction of the earth toward the person is...
500 N
A Mack truck (very large mass) and a Volkswagen (a much smaller mass) traveling at the same speed collide head-on. The impact force is the greatest on the...
is the same for both
A Mack truck and a Volkswagen traveling at the same speed have a head on collision. The vehicle to undergo the greatest change in velocity is will be the...
Volkswagen
A car traveling at 100 km/hr strikes an unfortunate bug and splatters it. The force of impact is greater on the...
the same
The force exerted on the tires of a car to directly accelerate it along a road is exerted by the...
road
Two people pull on a rope in a tug-of-war. Each pulls with 400 N of force. What is the tension in the rope?
400 N
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