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Newtons Laws Retest

Total questions: 25

Worksheet time: 1hrs 22mins

Name
Class
Date
1.

A pound is ________ Newtons.

a)

1.0

b)

2.20

c)

9.81

d)

4.448

e)

0.224

2.

Inertia is a property of

a)

weight

b)

velocity

c)

mass

d)

speed

e)

acceleration

3.

Normal force is

a)

parallel to the surface it's on

b)

always parallel to any surface it's one

c)

always perpendicular to any surface it's on

d)

only perpendicular to any inclined surface

e)

only perpendicular to any flat surface it's on

4.

You can change weight by all but

a)

changing planets.

b)

going up a very high mountain.

c)

doing down into a very deep valley.

d)

losing a body part.

e)

all of these change the weight.

5.

A body at rest remains at rest and a body in motion remains in motion unless acted on by a net external force.

a)

1st Law

b)

2nd Law

c)

3rd Law

d)

4th Law

e)

Law of Universal Gravitation

6.

Mu is the symbol for

a)

a change in

b)

the sum of

c)

equilbrium

d)

a force

e)

none of these

7.

Viscous friction is another term for

a)

kinetic friction

b)

static friction

c)

air resistance

d)

doesn't have another name

e)

rolling friction

8.

The sum of all forces acting on an object is the

a)

normal force

b)

net force

c)

static friction force

d)

kinetic friction force

e)

normal force

9.

Acceleration is proportional to force and inversely proportional to mass.

a)

1st Law

b)

2nd Law

c)

3rd Law

d)

4th Law

e)

Newton's Law of Universal Gravitation

10.

Weight is

a)

the amount of stuff in an object.

b)

the effect of gravity on mass.

c)

an object's resistance to a change in motion.

d)

all of these

e)

none of these

11.

For every action, there is an equal and opposite reaction.

a)

1st Law

b)

2nd Law

c)

3rd Law

d)

4th Law

e)

Newton's Law of Universal Gravitation

12.

What is the net force required to accelerate a 14 kg box at a rate of 4.6 m/s2?

a)

19 N

b)

64 N

c)

3.0 N

d)

0.33 N

e)

140 N

13.

What type of friction describes the tendency for objects to stick together until a certain force is applied?

a)

rolling friction

b)

air friction

c)

static friction

d)

kinetic friction

e)

sliding friction

14.

If a boat sails east, in what direction will the friction force be

a)

north

b)

south

c)

east

d)

west

e)

depends on the speed

15.

What is the mass of an object that weighs 1300 N on Earth?

a)

6.0 x 101 kg

b)

130 kg

c)

13000 kg

d)

650 kg

e)

270 kg

16.

What is the acceleration due to gravity on Planet Quark is someone who weighs 1200 N on Earth weighs 1.0 x 103 N on Quark?

a)

120 m/s2

b)

12 m/s2

c)

9.8 m/s2

d)

1.0 x 102 m/s2

e)

8.2 m/s2

17.

A 26 N wooden box is on the floor. How much force does it take to make the box slide if the coefficient of static friction is 0.17?

a)

76 N

b)

26 N

c)

150 N

d)

0.0 N

e)

4.4 N

18.

What is the force of sliding friction between a block and the ground if the coefficient of kinetic friction is 0.26 and the block weighs 12 N?

a)

3.1 N

b)

0.81 N

c)

37 N

d)

12 N

e)

46 N

19.

What is the acceleration of a 4.2 kg box sliding across the floor under the action of a net force of 78 N?

a)

0.54 m/s2

b)

8.4 m/s2

c)

74 m/s2

d)

330 m/s2

e)

19 m/s2

20.

A 240 kg spacecraft weighs 789 N on the surface of Planet Alpha. What is the acceleration due to gravity on the planet's surface?

a)

6.8 m/s2

b)

9.8 m/s2

c)

6.5 m/s2

d)

0.31 m/s2

e)

3.3 m/s2

21.

A child sits on a tire swing that is suspended by a single rope from a tree branch. What is the tension in the rope if the mass of the child and tire is 49 kg?

a)

480 N

b)

59 N

c)

2400 N

d)

49 N

e)

5.0 N

22.

A 13 kg box is lying at rest on a frictionless surface. How far will the box travel in 16 s if a constant net force of 15 N is applied?

a)

3.0 x 102 m

b)

18 m

c)

150 m

d)

3800 m

e)

1.2 m

23.

A 8400 kg jet reaches a take of velocity of 1.00 x 102 m/s after accelerating down from rest down an 8.00 x 102 m. What is the net force required of the jet's engines?

a)

53000 N

b)

6.7 x 108 N

c)

67000 N

d)

1.1 x 105 N

e)

1300 N

24.

Jim passes a 0.66 kg basketball to Sam by applying a net force of 87 N. What is the acceleration of the basketball while the force is being applied?

a)

0.66 m/s2

b)

0.0076 m/s2

c)

88 m/s2

d)

57 m/s2

e)

130 m/s2

25.

The graph shows velocity versus time for a 9.9 kg cart pulled along a flat road by a constant horizontal force. What is the magnitude of the net force acting on the cart?

a)

4.0 x 101 N

b)

0.0 N

c)

5.0 x 101 N

d)

3.0 x 101 N

e)

2.0 x 101 N