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Worksheets23/24 Newton's Laws of Motion
Total questions: 60
Worksheet time: 31mins
Jessica is comparing two balls. One ball has a mass of 1 kg, and the other has a mass of 2 kg. She pushes each with a force of 100 N. How do the accelerations of the two balls compare?
The 1 kg ball accelerates the same as the 2 kg ball.
The 1 kg ball accelerates half as much as the 2 kg ball.
The 1 kg ball accelerates twice as much as the 2 kg ball.
The 1 kg ball accelerates four times as much as the 2 kg ball.
A fisherman steps off a boat, which is in the water, onto a dock. What happens?
The boat and dock do not move.
The boat moves toward the dock.
The boat moves away from the dock.
The dock moves away from the boat.
Look at the diagram of forces acting on an object. The picture shows a push and a pull acting on a box of books sitting on the floor. What is the net force toward the right on the box?
0 N
50 N
100 N
2,500 N
When two objects having different masses collide, they move away from each other at different speeds. Which is true of the forces exerted at the moment of impact?
The forces exerted when they collide are equal and opposing.
The forces exerted when they collide are unequal and opposing.
The forces exerted when they collide are equal and in the same direction.
The forces exerted when they collide are unequal and in the same direction.
An airplane is traveling at a speed of 200 m/s relative to the Earth. A person walks toward the front of the plane at a speed of 1 m/s. How fast is that person traveling in reference to the other people on the airplane?
0 m/s
1 m/s
200 m/s
201 m/s
Two equal forces act in opposite directions on object A. Two unequal forces act in opposite directions on object B. If these are the only forces acting on objects A and B, which of these conclusions is true?
Only object A will accelerate.
Only object B will accelerate.
Both object A and object B will accelerate.
Neither object A nor object B will accelerate.
The diagram shows the forces acting on a running shoe. As force F is applied, the shoe does not move. Which statement describes the forces?
The net force is acting to the left.
The net force is moving to the right.
The net force is acting in an upward direction.
The net force is zero, and all forces are balanced.
The same force is applied separately to two objects, A and B. B is twice the mass of A. What happens?
B's acceleration is half that of A.
B's acceleration is twice that of A.
B's acceleration is one-fourth that of A.
B's acceleration is four times that of A.
Given the position of an object at two different times, which of the following can you determine?
The average speed of the object over a given time.
The average velocity of the object over the given time.
The average acceleration of the object over the given time.
You are sitting in a crowded movie theater waiting for friends. The following are ways that you could describe your location within the theater using reference points. Which description may be unreliable because of the reference point?
I am sitting near a theater worker, fifth seat from the side.
I am in the fifth row from the back, tenth seat from the right side.
I am in the sixth row from the front, tenth seat from the right side.
A frog leaping upward off the lily pad is pulled down by gravity and lands on another lily pad instead of continuing in a straight line.
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Which law states that the acceleration of an object depends on the mass of the object and the amount of force applied?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Which law states that when one object applies a force to a second object, the second object applies an equal and opposite force on the first object?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Which law states that unless acted on by an unbalanced force, an object at rest stays at rest and an object in motion stays in motion at a constant velocity?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Objects with _____ mass have _____ inertia than objects with less mass.
less, more
more, less
more, more
During a baseball game, a hitter strikes the ball with a bat. When this happens, the ball and the bat exert a force on each other. Why does the ball accelerate away from the bat more than the bat accelerates away from the ball?
The ball has less mass, so it exerts less force on the bat.
The ball has greater velocity before the collision, so the force affects the ball more than it affects the bat.
The ball has less mass, so the equal force on the ball and the bat causes greater acceleration of the ball.
The bat exerts more force than the ball because the batter is exerting a force on the bat as it hits the ball.
One marble is moving and collides with a stationary marble. Which of these statements is true?
Each marble exerts a force on the other, and the two forces are equal and in opposite directions.
Each marble exerts a force on the other, and the two forces are the same in magnitude and direction.
Each marble exerts a force on the other, and the two forces are proportional to the masses of the marbles.
The moving marble exerts a force on the stationary marble, but the stationary marble does not exert a force on the moving marble.
A soccer player kicks a ball. The player’s foot exerts a force on the ball. The ball exerts a force on the foot. Why don’t the forces cancel out to result in a net force of zero?
The ball moves before the forces can cancel out.
The forces become unbalanced due to air resistance.
The force on the ball is greater than the force on the foot.
The forces are exerted on different objects, and neither force is zero.
The front of a car is designed to crumple during a crash. What is the purpose of this?
to decrease the mass of the car, decreasing the force of the collision
to increase the amount of time it takes for the collision to occur, decreasing the force of the collision
to increase the amount of time it takes for the collision to occur, decreasing the acceleration of the car
to decrease the amount of time it takes for the collision to occur, increasing the acceleration of the car
A golfer has a choice of several golf clubs with different masses that he can use to hit a golf ball. He can swing all the clubs at the same speed. If he wants to hit the golf ball as far as possible, which club should he choose?
the club with the greatest mass because it will have a greater acceleration
the club with the smallest mass because it will have a greater acceleration
the club with the greatest mass because it will provide the largest force to the golf ball
the club with the smallest mass because it will provide the largest force to the golf ball
Which two of these statements are true about the collision of two objects with different masses based on Newton's laws of motion?
Each object experiences an equal and opposite force.
The more massive object will exert a greater force on the less massive object.
Each object will accelerate in an opposite direction from the other but at a different rate.
The less massive object will accelerate due to the force of the collision, but the more massive object will not.
The mat in the photo helps protect the gymnast by ______ the duration of the collision between the gymnast and the floor.
increasing
decreasing
In a simple collision between two objects, Newton's laws of motion can be used to describe the motion of which of the objects?
Both objects
Only objects that are moving before the collision
Neither object
When the masses of two colliding objects are very different, the effect on the _______ object is greater than the effect on the ________ one.
larger, smaller
smaller, larger
A moving car backs into a parked car in a parking lot. Why would the bumpers on both cars be dented?
The parked car was made of weaker material than the car that was not moving.
The car that was moving was made of weaker material than the parked car.
When one car bumps into the other car, they collide with equal and opposite force.
The bumpers of both cars would not have become dented as a result of this minor collision.
The same force is applied separately to two object, A and B. B has twice the mass of A. What happens?
B's acceleration is half that of A.
B's acceleration is twice that of A.
B's acceleration is one-fourth that of A.
B's acceleration is four times that of A.
A tennis ball hits a wall. Which of these statements is true?
The tennis ball's force is unopposed by the wall.
The tennis ball's speed doubles when it hits the wall.
The wall exerts a force in the same direction as the tennis ball's force.
The wall exerts a force in the opposite direction as the tennis ball's force.
What change could cause an apple hanging from a tree branch to fall?
loss of gravity
loss of a sideways force on the left
loss of a sideways force on the right
loss of the upwards force opposing gravity
Which forces are acting on a person who is standing still on a sidewalk?
gravity in the downward direction
the sidewalk in an upward direction
the sidewalk in the downward direction
gravity in the upward direction
How would the forces change if a person standing still on a sidewalk started walking?
The person would exert a sideways force on the sidewalk.
The sidewalk would exert a sideways force in the same direction as the person.
The sidewalk would exert a sideways force in the opposite direction as the person.
Two ice skaters on ice push away from each other. What will be the effect of the forces of their pushing each other if their masses are different?
The skater with the greater mass will have the lesser acceleration.
The skater with the less mass will have the lesser acceleration.
Jessica is comparing two balls. One ball has a mass of 1 kg, and the other has a mass of 2 kg. She pushes each with a force of 100 N. How do the accelerations of the two balls compare?
The 1 kg ball accelerates the same as the 2 kg ball.
The 1 kg ball accelerates half as much as the 2 kg ball.
The 1 kg ball accelerates twice as much as the 2 kg ball.
The 1 kg ball accelerates four times as much as the 2 kg ball.
A 1 kg object accelerates at a rate of 5 m/s2. Calculate the net force on the object. Tell how its motion is changing.
5 N, The object is accelerating.
1 N, The object is accelerating.
15 N, The object is not accelerating.
0 N, The object is not accelerating.
If someone drops a cup, it falls to the ground. Why doesn’t the gravitational force between the person’s hand and the cup keep the cup from falling?
The cup does not experience any gravitational force because it is not a planet.
The gravitational force between the hand and the cup is so strong that it pushes the cup down.
There is no gravitational force between the hand and the cup, so Earth's gravitational force pulls the cup down.
There is a gravitational force between the hand and the cup, but Earth's gravity is stronger, so Earth's gravity pulls the cup down.
Two factors affecting the magnitude of the force of gravity between 2 objects are...
mass and distance
mass and matter
distance and weight
weight and mass
During a baseball game, a hitter strikes the ball with a bat. When this happens, the ball and the bat exert a force on each other. Why does the ball accelerate away from the bat more than the bat accelerates away from
the ball?
The ball has less mass, so it exerts less force on the bat.
The ball has greater velocity before the collision, so the force affects the ball more than it affects the bat.
The ball has less mass, so the equal force on the ball and the bat causes greater acceleration of the ball.
The bat exerts more force than the ball because the batter is exerting a force on the bat as it hits the ball.
Unless acted on by an unbalanced force, an object at rest stays at rest and an object in motion remains in motion at a constant velocity.
1st law
2nd law
3rd law
Which law is also known as the Law of Inertia?
1st law
2nd law
3rd law
What is the tendency of an object to resist change in motion?
friction
inertia
acceleration
reactions
_______ occurs when objects are in contact.
friction
inertia
energy
acceleration
The acceleration of an object depends on the mass of the object and the amount of force applied.
1st law
2nd law
3rd law
______ force needs to be applied to a loaded cart than an empty cart.
more
less
Force = Mass x Acceleration or f=ma
1st law
2nd law
3rd law
What is the unit for force?
newton
kilogram
meter
What is the unit for mass?
newton
kilogram
meter
What is the unit for acceleration?
newton
kilogram
m/s/s
What is the formula used to find acceleration?
A = F/M
A = M/F
What is the formula used to find mass?
M = F/A
M= A/F
An object's acceleration is _______ proportional to the net force acting on the object.
directly
inversely
An object's acceleration is _______ proportional to its mass.
directly
inversely
When an object applies a force to a second object, the second object applies an equal and opposite force on the first object.
1st law
2nd law
3rd law
Which law is also known as the Law of Action and Reaction?
1st law
2nd law
3rd law
Action and reaction forces are present when objects interact, even when there is no acceleration.
true
false
When the masses of two colliding objects are very different, the effect on the _______ object is greater than the effect on the _______ one.
larger, smaller
smaller, larger
Rebecca is practicing her aim by throwing a ball at a target. The ball exerts a force on the target, causing the target to fall over. But when this happens, the ball bounces backward. Why does the ball bounce backward?
The target exerts a larger force on the ball because the ball is very bouncy.
The ball exerts a larger force on the target, causing the target to have a larger change of motion than the ball.
The target exerts the same size force on the ball, so when the target moves in one direction, the ball moves in the opposite direction.
The ball exerts a smaller force on the target because the ball is smaller than the target, so the target causes the ball to bounce backward.
Which law best describes a satellite orbiting the earth?
Law of Inertia
Law of Mass and Acceleration
Law of Action and Reaction
Initially, a rubber ball sits on a level table. An upward force acts on the ball as well as the force of gravity. In order for the rubber ball to roll on the level table, a _________ is required. This quantity is measured in __________ .
sideways unbalanced force, newtons
sideways balanced force, newtons
sideways unbalanced force, pounds
sideways balanced force, pounds
After stepping into a mud puddle, Susan stomps her shoes on the ground to remove some of the mud from them. Which explains why the mud comes off her shoes?
The mud has less mass than her shoes.
The mud continues in motion even after the shoes stops.
Mud tends to travel farther.
The mud has more momentum.
A 10 kg bike accelerates at 5 m/s2. What was the force applied?
25 N
50 N
20 N
10 N
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them. Which law is demonstrated?
1st law
2nd law
3rd law
