Question

Find the work required to pitch a 6. 3oz softball at 85ft/sec. The work required to pitch a 6. 3oz softball at 85ft/sec is ft−lb. (Do not round until the final answer. Then round to the nearest tenth as needed. )

Answer 1

Explanation:

The kinetic energy = 1/2 mv^2 starts at zero

the work required is the kinetic energy the ball attains

6.3 ounce = 6.3 /16 = .39375 lb

KE = 1/2 ( .39375 lb)/ ( 32.2 ft/s^2) * ( 85 ft /s)^2 = 44.17 ft-lbs