Free Printable 40 QUESTIONS MOMENTUM

1.

The equation to calculate momentum is

a)

p=mv

b)

p=1/2mv²

c)

p=mgh

d)

p=mg

2.

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

3.

Momentum is a ____________________ quantity

a)

science

b)

scalar

c)

vector

d)

energy

4.

In any collision (crash) the ______ is ALWAYS constant

a)

Total Momentum

b)

total speed

c)

total Velocity

d)

Energy

5.

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

6.

The SI unit of the momentum of an object is

a)

kg ms^-2

b)

kg s^-1 m^-1

c)

kg m s^-1

d)

kg m^{-1 s}

7.

Trolley A and B are approaching each other and collide.

Which statement is true?

a)

Elastic collision occurs

b)

Total momentum is conserved.

c)

Total kinetic energy is conserved

d)

Both objects will move with different velocity after collision.

8.

Two identical balls P and Q, moving towards each other with a velocity of v and 2v respectively. The collision between the two balls is an elastic collision.

which statement is correct about the elastic collision?

a)

The momentum of ball P before the collision is equal to the momentum of ball Q before collision.

b)

The kinetic energy of ball P before the collision is equal to the kinetic energy of ball Q before the collision.

c)

The total kinetic energy before the collision is not equal to the total kinetic energy after the collision.

d)

The total momentum before the collision is equal to the total momentum after the collision.

9.

The diagram shows two trolleys of the same mass before and after the collision.

Which of the statements is correct about momentum after collision?

a)

Trolley A : increase , Trolley B : increase

b)

Trolley A : increase , Trolley B : decrease

c)

Trolley A : Decrease , Trolley B : increase

d)

Trolley A : no change , Trolley B : no change

10.

P, Q and R are three similar pendulums, P has a velocity of u and before it collides with Q.

Predict what would happen after collision?

a)

P and Q do not move while R moves with a velocity of u

b)

P, Q and R move together with a velocity of $\frac{1}{3}u$

c)

P stops and both Q and R move with a velocity of $\frac{1}{2}u$

d)

P moves backwards with a velocity of u, Q and R move together with a velocity of $\frac{1}{2}u$

11.

The picture below shows firemen holding a hose apraying out water.

several firemen are needed to hold the hose

a)

to support the weight of the hose

b)

to increase the mass of water coming out

c)

to increase the speed of the water in the forward direction.

d)

to reduce the large recoil effect.

12.

Diagram shows two trolleys, P and Q on a friction less plane. Trolley P moves and collides with the stationary Trolley Q.

Which of the following statements is true?

a)

The collision is an elastic collision.

b)

both trolleys do not undergo changes in momentum.

c)

The total momentum before and after collision is the same.

d)

The total kinetic energy before and after the collision is conserved.

13.

In which situation can the principle of conservation of momentum be applied?

a)

A

b)

B

c)

C

d)

D

14.

Diagram shows identical coins P, Q and R at rest on a horizontal surface.

What will happen when P collides with Q?

a)

P : moves, Q : stationary, R : stationary

b)

P : stationary, Q : stationary, R : moves

c)

P : moves, Q : moves, R : stationary

d)

P : moves, Q : stationary, R : moves

15.

The momentum of an object depends upon the object's ___________&_____________.

a)

size and shape

b)

mass and speed

c)

mass and veloctiy

d)

mass and energy

16.

In an elastic collision, ______ is conserved.

a)

Momentum only

b)

Kinetic Energy only

c)

Both momentum and energy

17.

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball.

a)

55 kg m/s

b)

100 kg m/s

c)

250 kg m/s

d)

500 kg m/s

18.

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.

19.

A 0.250 kg cart moving at 0.400 m/s has how much momentum?

a)

0.1 kg-m/s

b)

1 kg-m/s

c)

10 kg-m/s

d)

100 kg-m/s

20.

If an object has a momentum of 40 kg m/s and a mass of 60 kg, what is it's velocity?

a)

2400 m/s

b)

1.5 m/s

c)

240 m/s

d)

0.67 m/s

21.

Determine the momentum of 1000-kg car moving northward at 20 m/s.........

a)

20000 N

b)

20000 Joules

c)

20000 Kg * m/s

d)

20000 kg * m/s north

22.

A car is of mass 15kg is travelling east at a velocity of 3m/s. the value of its momentum is:

a)

30kg.m.s^-1

b)

45kg.m.s^-1

c)

18kg.m.s^-1

d)

5kg.m.s^-1

23.

If an object has a mass of 20 kg and a velocity of 1 440 000 cm/h , what is the momentum of the object?

a)

80 kgm/s

b)

4 kgm/s

c)

5 kgm/s

d)

0.2 kgm/s

24.

A 4 kg cart has a momentum of 40 kg m/s. What is its velocity?

a)

22 m/s

b)

0.2 m/s

c)

5.0 m/s

d)

10 m/s

25.

A bullet of mass 10 g strikes horizontally at a target of mass 2 kg and is embedded into it. the two objects then move together with velocity 4 $ms^{-1}$ . What is the velocity of the bullet just before collision?

a)

401 $ms^{-1}$

b)

804 $ms^{-1}$

c)

1020 $ms^{-1}$

d)

1440 $ms^{-1}$

26.

A bullet of mass 20 g is fired from a gun of mass 980 g. The bullet leaves the gun with a speed of 240 $ms^{-1}$ . Find the speed of recoil of the gun. (Assume bullet in positive direction)

a)

$-$ 4.90 $ms^{-1}$

b)

$-$ 4.98 $ms^{-1}$

c)

$-$ 6.40 $ms^{-1}$

d)

$-$ 11760 $ms^{-1}$

27.

The diagram shows a velocity-time graph for the motion of an object.

the momentum of the object is constant form

a)

0 s to 3 s

b)

6 s to 8 s

c)

3 s to 6 s

d)

6 s to 8 s

28.

Diagram shows two trolleys before and after collision. What is the velocity of both trolleys after collision?

a)

0.60 m/s

b)

0.83 m/s

c)

1.20 m/s

d)

2.00 m/s

29.

The mass of the man is 50 kg and he jumps at a velocity 2 $ms^{-1}$ . The mas of the boat is 20 kg. Calculate the velocity of the boat of the boat as the man jumps.

a)

10 m/s

b)

$-$ 500 m/s

c)

$-$ 5 m/s

d)

$-$ 0.5 m/s

30.

Diagram shows the motion of a bowling ball and a bowling pin before and after the collision. Given the momentum after the collision is for bowling ball is 0.4 kg $ms^{-1}$ and bowling pin is 2.1 kg $ms^{-1}$ .
What is the total momentum before the collision?

a)

5.0 kg $ms^{-1}$

b)

2.5 kg $ms^{-1}$

c)

2.1 kg $ms^{-1}$

d)

0.84 kg $ms^{-1}$

31.

A 2.5 kg ball moving at 5 m/s collides with another 2.5 kg ball that is at rest in a perfectly elastic collision. What is the total momentum of these two balls before collision?

a)

25 kg m/s

b)

12.5 kgm/s

c)

50 kgm/s

d)

6.25 kgm/s

32.

A 120 kg lineman moving at -2 m/s tackles an 80 kg fullback moving at +8 m/s. Both players are intertwined as they fall to the ground. If the fullback's velocity after they collide is +2 m/s, what is the lineman's velocity?

a)

2 m/s

b)

8.7 m/s

c)

4.7 m/s

d)

6 m/s

33.

A 25 kg object moving at +15 m/s strikes a 15 kg mass moving at -10 m/s. If the 25 kg object moves off at -2 m/s, what is the velocity of the 15 kg object?

a)

$-$ 18.3 m/s

b)

+18.3 m/s

c)

$-$ 27 m/s

d)

+7 m/s

34.

While playing a game of pool, a cue ball with a mass of 0.16 kg strikes a yellow ball which has the same mass. The velocity of the cue ball before the collision is 6 m/s. After the collision, the cue ball rebounds in the opposite direction with a velocity of -3 m/s. What is the velocity of the yellow ball immediately after the collision?

a)

9 m/s

b)

$-$ 9 m/s

c)

3 m/s

d)

3 m/s

e)

can't be determined

35.

An object of mass 2 kg moving with a velocity 1 $ms^{-1}$ collides with an object of mas 4 kg moving with velocity 3 $ms^{-1}$ in the opposite direction. After the collision, the two objects stick to each other and move together. What is the final velocity for both objects?

a)

1.67 $ms^{-1}$

b)

1.80 $ms^{-1}$

c)

2.33 $ms^{-1}$

d)

2.50 $ms^{-1}$

36.

Based on the diagram, a 3 kg object moves at a velocity of 10 $ms^{-1}$ and hits a 6 kg object which moves in the opposite direction at 2 $ms^{-1}$ . If the second object rebounds at 6 $ms^{-1}$ , What is the velocity of the first object?

a)

$-$ 9 $ms^{-1}$

b)

2 $ms^{-1}$

c)

$-$ 6 $ms^{-1}$

d)

$-$ 16 $ms^{-1}$

37.

A 100 g bullet is shot from a 1 kg gun. if the bullet is travelling at 150 $ms^{-1}$ after being shot. What is the jerk of the gun?

a)

$-$ 5 $ms^{-1}$

b)

$-$ 10 $ms^{-1}$

c)

$-$ 20 $ms^{-1}$

d)

$-$ 15 $ms^{-1}$

38.

A trolley of mass 4 kg moves at 3 $ms^{-1}$ and collides with a trolley of mass 2 kg which is moving in the opposite direction at 1 $ms^{-1}$ . After the collision, both trolleys move together with same velocity. What is the velocity after the collision?

a)

$\frac{7}{3}$ $ms^{-1}$

b)

$\frac{5}{3}$ $ms^{-1}$

c)

$\frac{5}{2}$ $ms^{-1}$

d)

$\frac{1}{4}$ $ms^{-1}$

39.

A hammer is used to separate the system of two trolleys as shown in figure above. What is the distance x if both trolleys hit the wooden blocks at the same time. ( hint, since $v\ =\frac{s}{t}\ ,\ then\ \ \ \ \ m_1\ \frac{s_1}{t}\ -m_{2\ }\ \frac{s_2}{t}\ =\ 0\$ )

a)

2 m

b)

1 m

c)

1.5 m

d)

3 m

40.

A trolley of mass 2.0 kg is placed horizontally. A bullet of mass 4 g is shot horizontally at the trolley at the velocity of 400 $ms^{-1}$ . What is the final velocity of the bullet and the trolley?

a)

0.80 $ms^{-1}$

b)

0.98 $ms^{-1}$

c)

7.80 $ms^{-1}$

d)

267 $ms^{-1}$

40 QUESTIONS MOMENTUM

Total questions: 40

Worksheet time: 1hrs 20mins

Similar Resources on Wayground