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WorksheetsMiss Liyana_QUIZ 3(PART 1) SP015 SEM 1, SESI 2023/2024
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
1. Momentum is defined as the product of mass, m and
a)
A. Impulse, J
b)
B. Acceleration, a
c)
C. Velocity, v
d)
D. Distance, s
2.
2. The impulse-momentum theorem states that
a)
A. The force on a moving object is equal to the magnitude of the impulse
b)
B. The impulse on an object is equal to the change in momentum, p of the body
c)
C. The impulse on an object is greater than the change in momentum it causes
d)
D. The impulse on an object is less than the change in momentum it causes
3.
3. Which of the following statements describing elastic collision between two objects is correct?
a)
A. The momentum and total energy are conserved but the kinetic energy can be changed to other forms of energy.
b)
B. The kinetic energy and total energy of both objects are conserved but the momentum is conserved only if the objects have the same mass.
c)
C. Kinetic energy is conserved; the total momentum may decrease but cannot increase.
d)
D. Momentum, kinetic energy and the total energy are all conserved.
4.
4. The graph shows how the force F on a body in a collision with another body varies with time t. The area under the graph represents
a)
A. the acceleration
b)
B. the work done
c)
С. the change in momentum
d)
D. the velocity
5.
5. The direction of momentum is _________ as the direction of velocity
a)
Same
b)
Opposite
6.
6. Impulse is a _________ quantity
a)
Scalar
b)
Vector
7.
7. Direction of impulse is _______ as the direction of force
a)
Same
b)
Opposite
8.
8. The law of conservation of momentum states that
a)
In a closed system, the total momentum before is more than the total momentum after
b)
In a closed system, the total momentum before is less than the total momentum after
c)
In a closed system, the total momentum after is more than the total momentum before
d)
In a closed system, the total momentum before is equal to the total momentum after
9.
9. When the speed of an object is doubled, its momentum
a)
A. remains unchanged in accord with the conservation of momentum.
b)
B. doubles
c)
C. quadruples
d)
D. decreases
10.
10. When the mass of an object is reduced by half, its momentum
a)
A. remains unchanged in accord with the conservation of momentum.
b)
B. doubles
c)
C. quadruples
d)
D. decreases by half
11.
11. A big fish swims upon and swallows a small fish at rest. After lunch, the big fish has less
a)
A. momentum
b)
B. velocity
c)
C. mass
d)
D. force
12.
12. The difference between a car hitting a wall vs. a car hitting a hay stack is
a)
A. the Impulse on the car hitting the wall is greater
b)
B. the change in momentum of the car hitting the wall is greater
c)
C. the force on the car hitting the hay stack is greater
d)
D. the collision time of the car hitting the hay stack is greater
13.
13. Softer landings tend to
a)
A. Increase impact force
b)
B. Increase force
c)
C. Increase collision time
d)
D. Increase change in momentum
14.
14. In any collision the ______ is ALWAYS constant.
a)
A. Total Momentum
b)
B. Total speed
c)
C. Total Velocity
d)
D. Energy
15.
15. In an elastic collision the kinetic energy is
a)
Conserved
b)
Not Conserved
16.
16. In an inelastic collision the kinetic energy is
a)
Conserved
b)
Not Conserved
17.
17. To identify the type of collision we should compare the ______
a)
Momentum
b)
Kinetic energy
18.
23. The condition necessary for the conservation of linear momentum in a given system is that
a)
the energy is conserved
b)
one body is at rest.
c)
the net external force is zero.
d)
none of the answers above.
19.
24. In a collision,
a)
kinetic energy is conserved.
b)
linear momentum is conserved in the absence of external forces.
c)
both momentum and kinetic energy are conserved.
d)
neither momentum nor kinetic energy is conserved.
20.
27. Impulse is equal to change in,
a)
Velocity
b)
Kinetic energy
c)
Momentum
d)
Force
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