Free Printable Phy Y10Y11 Y10 C3 C3.5 IGCSE 9_3 Momentum & Impulse 01 02 03 04

1.

The law of conservation of momentum states that,

a)

Momentum p before is less than momentum p after

b)

momentum p before is the same as momentum p after

c)

momentum p before is more than momentum p after

d)

.

2.

What is the momentum of a 0.250 kg cart moving at 0.400 m/s ?

a)

p= mv

=(0.250)(0.400) kg-m/s

b)

p= mv

=(250)(400) kg-m/s

c)

p= mv

=(0.250)+(0.400) kg-m/s

d)

.

3.

What is the momentum of a 0.250 kg cart moving at 0.400 m/s ?

a)

0.1 kg-m/s

b)

1 kg-m/s

c)

10 kg-m/s

d)

100 kg-m/s

4.

If 2 objects collide and stick together, what will happen to their velocities?

a)

velocities will increase

b)

velocities will decrease

c)

velocities will stay the same

d)

none of the above

5.

A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?

a)

Momentum East =10*5

Momentum West=5*-10

Total Momentum=0 kgm/s

b)

Momentum East =10*5

Momentum West=10-5

Total Momentum=55 kgm/s

c)

Momentum East =10+5

Momentum West=10-5

Total Momentum=45 kgm/s

d)

10 kgm/s

6.

A large box slides across a frictionless surface with a velocity of 12 m/s and a mass of 4 kg, collides with a smaller box with a mass of 2 kg that is stationary. The boxes stick together. What is the velocity of the two combined masses after collision?

a)

0 m/s

b)

4 m/s

c)

8 m/s

d)

12 m/s

7.

A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?

a)

25 m/s

b)

375 m/s

c)

25 kg m/s

d)

375 kg m/s

8.

When the speed of an object is doubled, its momentum

a)

remains unchanged in accord with the conservation of momentum.

b)

doubles

c)

quadruples

d)

decreases

9.

In this type of collision, objects tend to "stick" together.

a)

elastic

b)

inelastic

c)

.

d)

.

10.

A big fish swims upon and swallows a small fish at rest. After lunch, the big fish has less

a)

momentum

b)

velocity

c)

mass

d)

.

11.

An 1 kg object moving to the right at 2 m/s collides inelastically with a 1 kg object moving to the left at 2 m/s. The final velocity of both objects will be

(1 kg) $\times$ (2m/s) + (1kg) $\times$ (-2m/s)

a)

0 m/s

b)

1 m/s

c)

2 m/s

d)

4 m/s

12.

A 8kg toy truck moves at 10m/s East. It collides head-on with a 10kg toy car moving 10 m/s moving west. What is the total momentum of the system?

a)

20 kgm/s West

b)

30 kgm/s West

c)

20 kgm/s East

d)

30 kgm/s West

13.

The difference between a car hitting a wall vs. a car hitting a hay stack is

a)

the Impulse on the car hitting the wall is greater

b)

the change in momentum of the car hitting the wall is greater

c)

the force on the car hitting the hay stack is greater

d)

the collision time of the car hitting the hay stack is greater

14.

Softer landings tend to

a)

increase impact force

b)

increase force

c)

increase collision time

d)

increase change in momentum

15.

The graph shows the force on an object of mass M as a function of time. For the time interval 0 to 4 s, the total change in the momentum of the object is

a)

40 kg m/s

b)

20 kg m/s

c)

0 kg m/s

d)

– 20 kg m/s

16.

In any collision (crash) the ______ is ALWAYS constant.

a)

Total Momentum

b)

total speed

c)

total Velocity

d)

Energy

17.

A 10kg toy truck moves at 5m/s East. It collides and bounces off of a 5kg toy car moving 10 m/s moving west. Which equation would you use to solve for the final velocity of the car?

a)

m₁v_1i+m₂v_2i=m₁v_1f+m₂v_2f

b)

(m₁+m₂₎v_i=m₁v_1f+m₂v_2f

c)

m₁v_1i+m₂v₂_i=(m₁+m₂)v_f

18.

In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other. The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s. The carts stick together when they collide. Calculate their final speed.

a)

0.5 m/s

b)

1.0 m/s

c)

0.33 m/s

d)

0.67 m/s

19.

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.

a)

-2.5
.
.

b)

-10

c)

-18

d)

-45

20.

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The time for the collision is _____ seconds.

a)

1.8
.
.

b)

2.5

c)

3.6

d)

10

21.

A 40-kilogram mass is moving across a horizontal surface at 5.0 m/s. What is the magnitude of the net force required to bring the mass to a stop in 8.0 seconds?

a)

1 N

b)

40 N

c)

25 N

d)

5 N

22.

It is a term used to describe a moving object, and it is expressed as a product of mass and velocity

a)

Momentum

b)

Impulse

c)

BOTH

23.

It is the product of force and time.

a)

Momentum

b)

Impulse

c)

BOTH

24.

To which of the following does the momentum of an object depend?

a)

Mass and velocity

b)

Force and speed

c)

Velocity and acceleration

d)

Time and acceleration

25.

Which has more momentum, a heavy truck moving at 50 km/h or a light truck moving at 50 km/h?

a)

Light truck

b)

Heavy truck

c)

BOTH

26.

A tennis player hits an approaching ball with a force of 500N. If he hits the ball in 0.005 seconds, how much impulse is imparted to the tennis ball?

a)

2.5 N s

b)

3.5 N s

c)

4.5 N s

d)

5.0 N s

27.

A moderate force will break an egg. However, an egg dropped on the road usually breaks, while one dropped on the grass usually does not break. How is this possible?

a)

The change in momentum is greater

b)

The change in momentum is less

c)

The time interval for stopping is less

d)

The time interval for stopping is greater

28.

The impulse experienced by a body is equal to the change in its _____.

a)

Kinetic energy

b)

Velocity

c)

Momentum

d)

Potential Energy

29.

8. A tennis player hits an approaching ball with a force of 750 N. If she hits the ball in 0.0002 s, how much impulse is imparted to the tennis ball?

a)

0 kg-m/s

b)

3.0 kg-m/s

c)

0.15 kg-m/s

d)

6.0 kg-m/s

30.

Carlos is driving his car at a very high speed. A certain amount of force must be applied to stop his car. Which condition below guarantees the need for a lesser amount of stopping force?

a)

If the car has more mass

b)

If the car has a lesser velocity

c)

If the car has more momentum

d)

If the car has constant momentum

31.

A huge truck and an auto engage in a head-on collision. Applying Newton's third law of motion, which vehicle experiences a greater impact?

a)

The huge truck

b)

The auto

c)

The same for both

32.

A 45 kg runner who runs with a speed of 5 m/s, what is his momentum?

a)

25 kg-m/s

b)

225 kg-m/s

c)

250 kg-m/s

33.

A car is speeding along the road when a bug suddenly slams into the windshield. Which undergoes the greater change in momentum?

a)

The bug

b)

The car

c)

The same for both

d)

.

34.

Consider an object with a constant mass, but whose momentum is changing which of the following is true about the object?

a)

The object is accelerating

b)

The object is moving with constant velocity

c)

The object is at rest

35.

The impulse experienced by a body is equal to the change in its _____.

a)

Velocity

b)

Momentum

c)

Acceleration

36.

It is the product of the mass of an object and its velocity.

a)

Acceleration

b)

Impulse

c)

Momentum

d)

Velocity

37.

How do Impulse and Momentum related?

a)

Change in impulse is equal to the change in momentum.

b)

Change in impulse is greater than the change in momentum.

c)

Change in impulse is lesser than the change in momentum.

38.

Which of the following shows how momentum and impulse are related?

a)

Vehicle collided

b)

Falling of an object from a higher place

c)

Taekwondo sports when a player shows a follow-through to his opponent

d)

All of the above

39.

Meisha is playing a bowling ball with a mass of 2.0 kg and moving it at a rate of 2.0 m/s. What is the momentum of the bowling ball?

a)

4.0 kg-m/s

b)

1.0 kg-m/s

c)

2.0 kg-m/s

d)

0.5 kg-m/s

40.

Mary saw a man running, which is 50-kg, and she also saw a 50-kg woman walking in the plaza early morning. Which among the two people possess a greater magnitude of momentum?

a)

A 50-kg man running

b)

A 50-kg woman walking

c)

Both of them

41.

How do airbags and seatbelts affect the impact of force applied to a car accident?

a)

The impact time is longer, thus resulting in a lesser impact of force.

b)

The greater the impact time, the greater the impact of force

c)

The impact time is shorter, thus resulting in a greater impact of force

42.

Which two quantities are needed to calculate momentum?

(a)

Choose from the below words

mass & velocity

force & velocity

force & time

mass & time

force & acceleration

43.

Which of these equations is used to calculate momentum?

a)

p = mv

b)

p = m/v

c)

p = m + v

d)

p = v/m

44.

Which of these units are used for momentum?

a)

kg m/s

b)

m/s

c)

N/m

d)

kg

45.

The momentum of an object is related to the object's mass and velocity.

a)

True

b)

False

46.

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

a)

car

b)

bike

c)

they are equal

d)

cannot determine using the info provided

47.

What is the unit for mass?

a)

m/sec

b)

kg/sec

c)

kg

d)

kg m/sec

48.

What is the momentum of a 55kg person running at 7 m/s? Do not include units

49.

True or false: The total momentum before and after an elastic collision remains the same.

a)

true

b)

false

50.

If a 100kg car has a momentum of 2000 kg m/s, how fast is it going? Do not include units

51.

Calculate momentum and put them in order from GREATEST to LEAST momentum. (1st one should be the largest)

a)

m = 1000

v = 50

b)

m = 100

v = 100

c)

m = 400

v = 15

d)

m = 2000

v = 2

e)

m = 1500

v = 2

1)

2)

3)

4)

5)

52.

In any collision (crash) the ______ is ALWAYS constant

a)

Total Momentum

b)

total speed

c)

total Velocity

d)

Energy

53.

When two objects collide, the P_before is ____________ the P_after.

a)

more than

b)

less than

c)

equal to

d)

unrelated to

54.

Which object listed below has the greatest momentum?

a)

A 0.05 kg object rolling at 0.2 m/s.

b)

A 0.15 kg object rolling at 2 m/s.

c)

A 0.15 kg object rolling at 1 m/s

d)

A 0.4 kg object rolling at 2 m/s.

55.

What is the unit for velocity?

a)

m/sec

b)

kg/sec

c)

kg/m

d)

kg m/sec

56.

The momentum of an object is related to the object's mass and velocity.

a)

True

b)

False

57.

A 50kg skater has a momentum of 500 kg m/s. How fast are they going? Do not include units

58.

Before a car accident, two cars had a total momentum of 1500 kg m/s. After the collision, what is the total momentum?

a)

not enough information

b)

1500 kg m/s

c)

750 m/s

d)

3000 m/s

59.

What is the unit for impulse?

a)

kg m/s

b)

m/s

c)

N/m

d)

kg

60.

Which of the following statements is true about momentum?

a)

Momentum is a scalar quantity.

b)

Momentum is a vector quantity.

c)

Momentum is always conserved in a collision.

d)

Momentum is always conserved in an explosion.

61.

Which of the following equations is used to calculate impulse?

a)

I = F X t

b)

I = m X v

c)

I = m X a

d)

I = F / t

62.

A moment is best described as...

a)

a force acting parallel to a distance from a pivot.

b)

a force acting over a distance.

c)

the rotation of an object.

d)

a force acting at a perpendicular distance from a pivot.

63.

Two children, A and B, are sitting on a see-saw, as shown in the figure below.

The see-saw is balanced.

Calculate the moment of child B about the pivot of the see-saw in N m. (just write the value, no units needed)

(a)

64.

Two children, A and B, are sitting on a see-saw, as shown in the figure below.

The see-saw is balanced.

Calculate the weight of child A if they are sitting 80 cm from the pivot of the see-saw in N. (just write the value, no units needed)

(a)

65.

A camera boom is used at a television studio to allow filming from different positions.

Figure 1 shows the arm of the boom in three different positions.

In which position will the weight of the camera cause the largest moment about the pivot?

a)

A

b)

B

c)

C

d)

They are all the same moment.

66.

A camera boom is used at a television studio to allow filming from different positions.

Complete the sentence.

When the moment caused by the weight of the camera increases, the moment caused by the counterweight ____________________ .

a)

decreases

b)

does not change

c)

increases

d)

They are all the same moment.

67.

The camera has a mass of 5.0 kg

gravitational field strength = 9.8 N/kg

Calculate the weight of the camera. write the unit symbol with your answer.

(a)

68.

Figure 2 shows the 5 kg camera boom in a new position, D.

Calculate the moment about the pivot caused by the weight of the camera when the arm of the boom is in position D in Nm. (no unit needed)

(a)

69.

Calculate the pulling force that is needed in the steel cable to keep the jib horizontal. (No unit needed)

(a)

70.

The diagram shows an air-driven toy.

When the electric motor is switched on the fan rotates.

The fan pushes air backwards making the toy move forwards.

The toy has a mass of 0.15 kg and moves forward with a velocity of 0.08 m/s.

How is the momentum of the toy calculated?

a)

0.15 + 0.08 = 0.230

b)

0.15 ÷ 0.08 = 1.875

c)

0.15 × 0.08 = 0.012

71.

What are the unit of momentum?

a)

kg m/s

b)

m/s²

c)

kg/m/s

72.

The fan pushes air backwards making the toy move forwards.

Use the correct answer to complete the sentence.

The momentum of the air backwards is _______________ the momentum of the toy forwards.

a)

less than

b)

equal to

c)

more than

73.

The diagram shows three vehicles travelling along a straight road at 14 m/s.

Which vehicle has the greatest momentum?

a)

Motorcycle

b)

Lorry

c)

Van

74.

The diagram shows three vehicles travelling along a straight road at 14 m/s.

Calculate the momentum of the motorbike when it travels at 14 m/s. (no unit needed)

(a)

75.

If the Van stops suddenly (it's speed is now 0 m/s) and the lorry hits it travelling at 14 m/s. They join together after the collision, how fast we they both be travelling? (answer to 2 significant figures, no unit needed)

(a)

76.

The law of momentum says that, momentum is always (a) (one word)

77.

How are weight, mass and g related

a)

W=mg

b)

m=Wg

c)

g=Wm

d)

W=m/g

78.

What is the equation for Hooke's Law (tick all correct answers)

a)

F=kx

b)

Force = spring constant x extension

c)

Force = mass x spring constant

d)

F=L x a

79.

Which equation represents Newton's second law

a)

F=ma

b)

F=kx

c)

$a=\frac{\Delta v}{t}$

d)

W=mg

80.

What is the equation for moments?

a)

Moment = force x perpendicular distance from pivot

b)

Moment = mass x velocity

c)

Moment = force x distance

d)

Moment = force x parallel distance from pivot

81.

When an object is in equilibrium, which equation is true?

a)

Clockwise moment = anticlockwise moment

b)

Clockwise moment + anticlockwise moment = 0

c)

Clockwise moment / anticlockwise moment = 0

d)

Clockwise moment + anticlockwise moment = resultant force

82.

Equation for momentum

a)

Momentum = mass x velocity

b)

Momentum = mass + velocity

c)

$Momentum\ =\ \frac{mass}{velocity}$

d)

Velocituy = momentum x velocity

83.

Symbol equation for momentum

a)

$p=mv$

b)

$p=\frac{m}{v}$

c)

$p=\frac{v}{m}$

d)

$M=mv$

84.

What is impulse

a)

Force x time

b)

Force x acceleration

c)

Force x velocity

d)

Force x mass

85.

Equation for impulse

a)

$Ft=mv-mu$

b)

$Ft=mv+mu$

c)

$Ft=\frac{mv}{mu}$

d)

$Ft=mu-mv$

86.

Equation for kinetic energy

a)

$Kinetic\ energy\ =\ \frac{1}{2}mv^2$

b)

$Kinetic\ energy\ =\ \frac{1}{2}mv^3$

c)

$Kinetic\ energy\ =\ \frac{1}{2}mv^{ }$

d)

$Kinetic\ energy\ =\ mv^2$

87.

Equation for gravitational potential energy (GPE)

a)

$GPE\ =\ m\times g\times\Delta h$

b)

$GPE\ =\ m\times\Delta g\times h$

c)

$GPE\ =\Delta m\ \times g\times h$

d)

$GPE=F\times g\times h$

88.

The law of conservation of momentum can be written as

a)

Momentum before = momentum after

b)

Momentum before > momentum after

c)

Momentum before < momentum after

d)

Momentum before x momentum after = 0

89.

Link between force, work done and distance

a)

work done = force x distance

b)

work done = distance / force

c)

work done = force / distance

d)

work done = force x work

e)

work done = force / work

90.

Link between energy transferred and work done

a)

energy transferred = work done

b)

energy transferrred = 1/2 work done

c)

energy transferred = work done2

d)

energy transferred = 1 / work done

e)

energy transferred = 4/3 π x work done³

91.

Efficiency equation

a)

efficiency = useful output / total input

b)

efficiency = total output / total input

c)

efficiency = total input / total output

d)

efficiency = total input / useful output

e)

efficiency = useful output / useful input

92.

One possible equation for efficiency is

a)

$efficiency=\frac{useful\ power\ output}{total\ power\ input}\times100\%$

b)

$efficiency=\frac{useful\ power\ output}{total\ power\ input}\div100\%$

c)

$efficiency=\frac{total\ power\ input}{total\ energy\ input}\times100\%$

d)

$efficiency=\frac{useful\ energy\ output}{total\ power\ input}\times100\%$

93.

Equation for power
Tick all that are correct

a)

$Power\ =\ \frac{energy\ transferred}{time\ }$

b)

Power = energy transferred x time

c)

$P=\frac{\Delta E}{t}$

d)

$P\ =\ \Delta E\ \times\ t$

Phy Y10Y11 Y10 C3 C3.5 IGCSE 9_3 Momentum & Impulse 01 02 03 04

Total questions: 93

Worksheet time: 2hrs 48mins

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