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- 1. Multiple Choice
Momentum is given by the formula p = mv. Choose the correct answer below :
p = power , m = mass , v = velocity
p = momentum , m = motion , v = volume
p = power , m = mass , v = volume
p = momentum , m = mass , v = velocity
- 2. Multiple Choice
The SI unit for linear momentum is :
kg m s-2
kg m s-1
kg m s
kg m-1 s
- 3. Multiple Choice
There is NO MOMENTUM, when the velocity of an object is :
V = 0 ms-1
V = constant
- 4. Multiple Choice
Impulse is defined as the product of force and time during which the forces act, J = F.t.
Impulse is produced by a FORCE called :
Applied force
Normal force
Gravitational force
Impulsive force
- 5. Multiple Choice
Impulse can be determined by calculating the area under graph of
force (f) - time (t) graph
impulse (J) - time (t) graph
momentum (p) - time( t) graph
velocity (v) - time (t) graph
- 6. Multiple Choice
After collision, the two objects move off with different velocity. What type of collision is this?
Inelastic
Elastic
- 7. Multiple Choice
Which option is correct for inelastic collision?
Total momentum is CONSERVED, kinetic energy is CONSERVED
Total momentum is NOT CONSERVED, kinetic energy is CONSERVED
Total momentum is NOT CONSERVED, kinetic energy is NOT CONSERVED
Total momentum is CONSERVED, kinetic energy is NOT CONSERVED
- 8. Multiple Choice
m1u1 + m2u2 = m1v1 + m2v2
This equation represents :
ELASTIC collision
Perfectly INELASTIC collision
- 9. Multiple Choice
For __________ collision, the total kinetic energy IS NOT CONSERVED. Some energy is lost and converted to other form of energy.
Elastic
Inelastic
- 10. Multiple Choice
Coefficient of restitution : Is the ratio of the difference in velocities before and after the collision.
Which option is correct?
A perfectly elastic collision, ek = 1
A perfectly elastic collision, ek = 0
A perfectly inelastic collision, ek = 1
- 11. Multiple Choice
m1u1 + m2u2 = (m1+m2) v
This equation represents :
Elastic collision
Inelastic collision
- 12. Multiple Choice
The value of coefficient of restitution, ek is always
ek >1
ek <0
0 > ek >1
ek = 0
- 13. Multiple Choice
Choose the correct answer.
I) momentum is a vector quantity
II) direction of momentum is the same as direction of weight
III) impulse is the change of momentum
iv) momentum increases when the velocity of a body increases
I and II only
I and III only
I , II and III only
I , III and IV only
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