Question

1.

The rotational inertia of a rod is greatest about an axis

		that goes through its center directed along its length
		that goes through its midpoint directed perpendicular to its length
		that goes through its end directed perpendicular to its length

2.

If one doubles the speed of a moving body, one also doubles its

		acceleration
		momentum
		kinetic energy
		potential energy
		inertia

3.

In a perfectly elastic one-dimensional collision, the kinetic energy transferred to the target particle is greatest if its mass is much less than that of the incident particle.

True

False

4.

If total mechanical energy were conserved exactly, a pendulum would swing forever.

True

False

Answer 1

Answers :

Question (1) Answer : The rotational inertia of a rod is greatest about an axis.

Answer : that goes through its end directed perpendicular to its length.

Question (2) Answer : If one doubles the speed of a moving body, one also doubles its

Answer : momentum

Question (3) Answer : In a perfectly elastic one-dimensional collision, the kinetic energy transferred to the target particle is greatest if its mass is much less than that of the incident particle.

Answer : True

Question (4) Answer : If total mechanical energy were conserved exactly, a pendulum would swing forever.

Answer : True