A child's play rifle uses a spring to fire a 5.21-g soft plastic ball. The spring...

A child's play rifle uses a spring to fire a 5.21-g soft plastic ball. The spring is compressed by 4.99 cm and has a spring constant of 7.94 N/m. When the rifle is fired, the ball moves 14.1 cm through the horizontal barrel of the rifle, and the barrel exerts a constant friction force of 0.032 7 N on the ball.

(a) With what speed does the ball leave the barrel of the rifle?

Make certain you have correctly converted all of the centimeter and gram quantities to MKS units. m/s

(b) At what point does the ball have maximum speed?

The maximum speed does not occur at the equilibrium point of the spring, because the friction force is also present throughout the motion. cm (from its original position)

(c) What is this maximum speed?

Expert Solution

genius_generous answered 6 months ago

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