Free Printable Newton's Laws and Forces

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Newton's Laws and Forces

Total questions: 26

Worksheet time: 43mins

Name

Class

Date

What term describes why objects resist changes in their state of motion?

gravity

inertia

force

friction

What explains a quantity that has BOTH speed and direction?

Inertia

Force

Speed

Velocity

The force that prevents a ball rolling on the ground from continuing on it's path forever is...

Friction

Gravity

Inertia

A person steps out of the boat and onto the dock. As the person moves forward onto the dock, the boat moves backward. Which statement best describes the backward motion of the boat as the person steps forward?

For every action there is an equal and opposite reaction.

Every mass exerts a force on every other mass.

An object at rest tends to stay at rest.

Friction opposes the motion of an object.

An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations

Newton's first law

Newton's second law

Newton's third law

Conservation of momentum

The combination of all the forces acting on an object is the...

net force

action force

reaction force

balance force

A force of 90N is applied to each cart below, which one will accelerate the fastest?

Cart 1

Cart 2

Cart 3

Cart 4

If a 10 kilogram object had a force of 50 newton's applied to it, what would its acceleration be?

15 m/s^2

5 m/s^2

.5 m/s^2

10 m/s^2

An inflated balloon released from rest moves horizontally.

The law that best explains this event is

Newton's 1st Law

Newton's 2nd Law

Newton's 3rd Law

Law of Gravity

10.

Which force causes an object to speed up or slow down (accelerate or decelerate)?

unbalanced force

balanced force

11.

The upward force acting on your parachute as it fell through the air is _________.

air force

weight

air resistance

upheaval

12.

If you travel to Mars, where gravity is less than Earth's gravity, what will happen to your mass and weight?

Your mass and weight will both be greater than on Earth.

Your mass and weight will both be less than on Earth.

Your mass will be the same, but your weight will be less than on Earth.

Your mass will be less than on Earth, but your weight will be the same.

13.

What kind(s) of objects have inertia?

all objects with mass

only objects at rest

only objects in motion

only objects whose motion is being changed

14.

After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals

twice the force with which it was fired

the same amount of force with which it was fired

1/2 the force with which it was fired

zero, since no force is requires to keep it moving.

15.

An object with a zero net force could be moving

true

false

16.

If you double the mass of an object with the same force apply on it, the acceleration will

double

cut in half

the same

zero

17.

The acceleration produced by a net force on an object is

inversely proportional to the mass of the object.

directly proportional to the magnitude of the net force.

in the same direction as the net force.

all of the above

18.

A bus hits a bug and the bug splatters on the windshield, which force is greater?

The Bus

The Bug

They're the same

Gravity acting on the bus

19.

____ is a force that opposes a sliding motion.

Static Friction

Normal force

Momentum

Kinetic Friction

20.

The diagram above shows a box being pulled up the ramp. Which letter represents the weight?

21.

A block is pulled along a rough level surface at constant speed by the force . The figure shows the free-body diagram for the block. F_N represents the normal force on the block; and f represents the force of kinetic friction. What is the magnitude of F_N?

2mg

22.

A 2.0-N rock slides on a frictionless inclined plane. Which one of the following statements is true concerning the normal force that the plane exerts on the rock?

The normal force is 2.0 N

The normal force is greater than 2.0 N

The normal force is less than 2 N, but greater than 0 N

The normal force is 0 N.

23.

A 2.50 kg block is held motionless on a rough inclined plane by means of a string attached to a vertical wall as shown in the drawing. $\theta=15^o$ and the string is pulling with 10.0 N. What amount of static friction is present?

6.34 N

10.0 N

3.70 N

0 N

24.

At a playground, a child (m=30.0 kg) slides down a slide that makes a 42° angle with the horizontal direction. The coefficient of kinetic friction for the child sliding on the slide is 0.20. What is the magnitude of her acceleration during her sliding?

4.6 m/s²

9.8 m/s²

5.1 m/s²

6.4 m/s²

25.

What will be the effect on the boy in the picture if the driver stops quickly?

Because of inertia he will remain in the same position.

He will be pushed back into the car seat.

He will move from one side of the car seat to the other.

He will move forward pressing against the seatbelt.

26.

Which law explains why the driver "keeps moving forwards, even though the car has stopped"?

1st

2nd

3rd

Reset

Newton's Laws and Forces

Total questions: 26

Worksheet time: 43mins

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