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WorksheetsMomentum, Impulse and Conservation of Momentum
Total questions: 20
Worksheet time: 14mins
What happens to the momentum of an object if its mass becomes lighter?
Momentum increases.
Momentum decreases.
Momentum is unchanged.
Momentum is not affected.
When comparing the momentum of two objects, which of the following statements is correct?
The less massive object will have less momentum if the velocities are the same.
The object with the higher velocity will have less momentum if the masses are equal.
The object with the higher velocity will have less momentum if the masses are equal.
The more massive object will have less momentum if the velocities are equal.
The change in an object’s momentum ( ΔP ) is equal to ___________________.
the time interval divided by the net external force
the product of the force applied to the object and the time interval
the product of the mass of the object and the time interval
the net external force divided by the time interval.
How do seatbelts and airbags in vehicles help to lessen the damage or risks during collision?
They limit the stopping time
They amplify the impact force
They reduce the impact force.
They exert a greater stopping force
Which two characteristics do closed systems possessed?
I. No net external force acts on it
II. The momentum of each object in the system remains constant
III. The system does not gain or lose momentum
IV. Objects can enter, but not leave the system
i and ii
i and iii
i and iv
ii and iii
The impulse experienced by a body is equivalent to the body’s change in ______________.
force
kinetic energy
momentum
velocity
Which of the following collisions doesn’t show elastic collision?
collision of billiard balls.
collision of gas particles inside a close container
collision of a ball and the ground when a player is bouncing it.
collision of two cars that stick together after the collision.
What is the impulse equivalent to?
change in momentum
force multiplied by time
Both a and b
Neither a nor b
What causes momentum change in objects or bodies?
change in gravity and friction
change in force and mass
change in acceleration and weight
change in mass and velocity
If there is no external force acting on the system, what happens to the momentum of moving vehicles before and after collision?
speeds up
slows down
remains unchanged
transforms into energy
Two identical cars are travelling along F. Torres Street. Car A moves at 90 km/hr while car B moves at 120 km/hr. Which of the two cars would have a lesser momentum?
Car A
Car B
Both cars
Cannot be easily determined
If the object’s mass is doubled, what happens to its momentum?
It remains constant.
It reduces to half.
It also doubles.
It becomes negligible.
Which of the following statement/s support/s is/are TRUE about the law of conservation of momentum?
As cars collide, they exert equal magnitude of force, but in opposite in direction
As cars collide, the momentum lost in one car is equally transferred to another car.
The total momentum before the collision and after the collision is constant.
All of the above
A soccer ball of mass 420 g is kicked at 20 m/s towards the goal post. Calculate the momentum of the ball. Remember: Convert grams to kilograms
1kg=1000g
8.4 kg . m/s
84 kg . m/s
840 kg . m/s
8400 kg . m/s
During collision, car A loses 50 units of momentum. What is the amount of momentum gained by car B if momentum is conserved?
0
25 units or half
still 50 units
100 units or double
For what time must you exert a force of 45 N to get an impulse of 16 Ns?
0.31 s
0.36 s
2.51 s
3 s
Given a bus parked in the terminal, while a car is traveling along Tionko Avenue. Which of the two vehicles has a greater momentum?
The bus
The car
Both have the same momentum
Cannot be determined
What is the impulse imparted by a bus that exerts 300 N for 1.63 seconds?
0
184 Ns
489 Ns
600 Ns
Which of the following is a necessary condition for the total momentum of a system to be conserved?
Kinetic energy must not change.
No net external force acts on the system.
The system must be at rest.
Only the force of gravity acts on the system.
A 2100 kg jeepney is traveling at a speed of 65 km/h toward the north, while a 3000kg truck is moving at 45.5 km/h in same direction. Which of the two vehicles has the greater momentum?
Note: Convert km/h to m/s
1 km = 1000 m
1 hour = 3600 s
jeepney
truck
Both have equal momentum
Both have zero momentum
