# Collisions and Momentum

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A question pack on dynamics in mechanical engineering.

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Angular Momentum is also known as which of the following?

Couple of a couple

Force of a force

Moment of a momentum

Force of a momentum

The coefficient of restitution during impact ranges from ______________ to ______________.

0, 2

0, 1

1, 2

0, 3

What is the coefficient of restitution for perfectly elastic impact?

0

1

2

0.5

What is the coefficient of restitution for perfectly elastic impact?

0

1

2

0.5

Which of the following statements about impact is false?

Impact occurs when two bodies collide.

The time of impact is very small.

The forces are very small.

The forces are large.

Which of the following statements about oblique impact is false?

The particles after impact move with known velocities.

The particles after impact move in unknown directions.

The particles after impact move with unknown velocities.

In the case of planar oblique collision, there are four unknown quantities.

Principle of linear momentum states that for connected system of particles the algebraic sum of linear impulse is ______________.

1

0

0.5

2

Which of the following statements about direct impact is true?

The center of mass of the colliding bodies coincides with the line of impact.

The center of mass of the colliding bodies does not coincide with the line of impact.

Both A and B

None of the above

Which of the following statements about eccentric impact is true?

The center of mass of the colliding bodies coincides with the line of impact.

The center of mass of the colliding bodies does not coincide with the line of impact.

Both A and B

None of the above

In three‑dimensions, internal force and moments have which the following effects on angular momentum?

Internal force and moments change angular momentum.

Internal force and moments do not change angular momentum.

Both A and B

None of the above

Angular Momentum is also known as which of the following?

Couple of a couple

Force of a force

Moment of a momentum

Force of a momentum

The coefficient of restitution during impact ranges from ______________ to ______________.

0, 2

0, 1

1, 2

0, 3

What is the coefficient of restitution for perfectly elastic impact?

0

1

2

0.5

What is the coefficient of restitution for perfectly elastic impact?

0

1

2

0.5

Which of the following statements about impact is false?

Impact occurs when two bodies collide.

The time of impact is very small.

The forces are very small.

The forces are large.

Which of the following statements about oblique impact is false?

The particles after impact move with known velocities.

The particles after impact move in unknown directions.

The particles after impact move with unknown velocities.

In the case of planar oblique collision, there are four unknown quantities.

Principle of linear momentum states that for connected system of particles the algebraic sum of linear impulse is ______________.

1

0

0.5

2

Which of the following statements about direct impact is true?

The center of mass of the colliding bodies coincides with the line of impact.

The center of mass of the colliding bodies does not coincide with the line of impact.

Both A and B

None of the above

Which of the following statements about eccentric impact is true?

The center of mass of the colliding bodies coincides with the line of impact.

The center of mass of the colliding bodies does not coincide with the line of impact.

Both A and B

None of the above

In three‑dimensions, internal force and moments have which the following effects on angular momentum?

Internal force and moments change angular momentum.

Internal force and moments do not change angular momentum.

Both A and B

None of the above

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