Physics Quiz 8

Two cars collide, lock bumpers, and move together after the collision. What kind of collision is this?

• elastic collision

• inelastic collision

• perfectly elastic collision

• perfectly inelastic collision

In what kind of collision is kinetic energy always conserved?

• elastic collision

• inelastic collision

• perfectly elastic collision

• perfectly inelastic collision

Most collisions in the everyday world are

• elastic collisions.

• inelastic collisions.

• perfectly elastic collisions.

• perfectly inelastic collisions.

In any system in simple harmonic motion, the restoring force acting on the mass in the system is proportional to

• displacement.

• the length of a pendulum.

• the mass.

• frequency.

The spring constant in a given oscillating mass-spring may be changed by

• increasing the mass.

• decreasing the mass.

• decreasing the initial displacement.

• none of the above

Stretching a spring increases its _____ energy.

• mechanical kinetic

• gravitational potential

• vibrational kinetic

• elastic potential

In a system in simple harmonic motion, the amplitude depends on

• frequency.

• wavelength.

• the position of the equilibrium point.

• maximum displacement from the equilibrium point.

In an oscillating mass-spring system, the distance of the maximum compression of the spring is a measure of

• amplitude.

• frequency.

• period.

• equilibrium.

Which of the following factors has the greatest effect on the frequency of a swinging pendulum?

• friction

• amplitude

• mass

• length

If a given pendulum is moved from Earth to a location where the gravitational acceleration is greater than Earth’s, the frequency of the pendulum’s swing will

• increase.

• decrease.

• be unchanged.

• vary with the mass of the bob.