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Forces and Newton's Laws

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

a push or pull

a)

force

b)

friction

c)

gravity

d)

inertia

2.

An object must move, in order for force to be acting on it

a)

true

b)

false

3.

the sum of all the forces acting on an object

a)

weight

b)

gravity

c)

net force

d)

balanced force

4.

What is the SI unit of force?

a)

m/s 2

b)

kg

c)

N

d)

N/kg

5.

movement resulting in a net force

a)

balanced forces

b)

unbalanced forces

6.

no movement resulting in no net force

a)

balanced forces

b)

unbalanced forces

7.

Two people push on a box in opposite directions. One pushes with a force of 10N and one with a force of 40N. What is the net force on the box?

a)

50N

b)

30N

c)

-30N

d)

no net force

8.

Two people push on a box in the same direction. One pushes with a force of 10N and one with a force of 40N. What is the net force on the box?

a)

50N

b)

30N

c)

-30N

d)

no net force

9.

the force that opposes the sliding motion of two surfaces that are touching each other

a)

gravity

b)

air resistance

c)

friction

d)

weight

10.

What type of friction cancels your force?

a)

rolling

b)

static

c)

sliding

11.

What type of friction opposes the motion of an object?

a)

rolling

b)

static

c)

sliding

12.

Static friction is required in order for wheels to roll

a)

true

b)

false

13.

an attractive force between any two objects dependent on the mass of the objects and the distance between them

a)

air resistance

b)

weight

c)

gravity

d)

net force

14.

Gravity depends on what two things?

a)

mass and force

b)

force and distance

c)

weight and mass

d)

distance and mass

15.

a region of space that has a physical quantity, such as force, at every point

a)

field

b)

planet

c)

space

d)

air

16.

Gravity has an infinite range. Infinite means __

a)

strong

b)

limitless

c)

weak

d)

measurable

17.

What is the strength of gravity measured in?

a)

N

b)

m/s2

c)

kg

d)

N/kg

18.

the gravitational force exerted on an object

a)

mass

b)

gravity

c)

weight

d)

friction

19.

What is the SI unit for weight?

a)

N

b)

kg

c)

N/kg

d)

lb

20.

Gravitational strength on earth is always

a)

9.8 m/s2

b)

changing

c)

increasing

d)

9.8 N/kg

21.

If a book has a mass of 0.2kg, what is the weight of the book on earth?

a)

not enough information

b)

0.2 N

c)

1.96 N

d)

20 N

22.

Your weight is the same on the moon as it is on earth

a)

true

b)

false

23.

Which law states: an object in motion stays in motion, an object at rest stays at rest, unless acted upon by an unbalanced force

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

24.

Which law is often referred to as the law of inertia?

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

25.

the tendency of an object resist any change in its motion

a)

inertia

b)

resistance

c)

friction

d)

gravity

26.

an object's inertia depends on its ___

a)

size

b)

mass

c)

weight

d)

gravity

27.

Which one has the most inertia?

a)

a ping pong ball

b)

a basketball

c)

a tennis ball

d)

a bowling ball

28.

which of the following would have the least amount of inertia?

a)

a ping pong ball

b)

a tennis ball

c)

a basketball

d)

a bowling ball

29.

Which law states: an object's acceleration is in the same direction as the net force acting on that object

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

30.

As force increases, acceleration decreases

a)

true

b)

false

31.

As mass increases, acceleration decreases

a)

true

b)

false

32.

The mass of a bowling ball is 2kg. If it has an acceleration of 50m/s2 , what is the net force exerted on the ball?

a)

25 N

b)

100 N

c)

48 N

d)

0.04 N

33.

In the formula Fg=mg, what does Fg represent?

a)

momentum

b)

gravity

c)

weight

d)

mass

34.

Which law states: for every action, there is an equal and opposite reaction

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

35.

According to Newton's First Law, at what speed would an unbelted passenger be ejected from a car that hits a wall?

a)

half the car's original speed

b)

double the car's speed

c)

the same speed the car was traveling

d)

impossible to know

36.

In a crash, what type of gas is released to inflate an airbag?

a)

Oxygen

b)

Helium

c)

Nitrogen

d)

Carbon Dioxide

37.

Acceleration due to gravity on earth is always

a)

dependent on the mass

b)

9.8 m/s2

c)

9.8 N/kg

d)

changing

38.

the friction like force that opposes the motion of objects that move through the air

a)

terminal velocity

b)

friction

c)

gravity

d)

air resistance

39.

Air resistance always exerts an upward force

a)

true

b)

false

40.

Amount of air resistance on an object depends on all of the following except:

a)

size

b)

strength of gravity

c)

speed

d)

shape

41.

the maximum speed an object will reach when falling through the air

a)

9.8 m/s2

b)

terminal velocity

c)

free fall

d)

acceleration

42.

if gravity is the only force acting on an object

a)

free fall

b)

air resistance

c)

weightlessness

d)

terminal velocity

43.

a force exerted toward the center of a curved path

a)

centripetal acceleration

b)

centripetal force

c)

free fall

d)

friction

44.

You push on a wall with a force of 300N but the wall doesn't move. What is the net force on the wall?

a)

300 N

b)

0 N

c)

unknown

d)

600 N

45.

You push on a wall with a force of 300N but the wall doesn't move. With what force does the wall push back?

a)

300 N

b)

0 N

c)

unknown

d)

600 N

46.

Which law states: momentum is transferred from one object to another

a)

Newton's First Law

b)

Law of Universal Gravitation

c)

Newton's Second Law

d)

Law of Conservation of Momentum

47.

A car crashes into a wall and is designed to crumple. What law can explain this?

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

48.

Which law states: the gravitational force increases as the mass of either object increases and/or as the objects move closer

a)

Newton's First Law

b)

Newton's Second Law

c)

Law of Universal Gravitation

d)

Law of Conservation of Momentum

49.

Gravity is one of ___ fundamental forces

a)

2

b)

3

c)

4

d)

infinite

50.

the amount of matter in an object

a)

100 N

b)

mass

c)

weight

d)

density