High-speed stroboscopic photographs show that the head of a 160-g golf club is traveling at 43 m/s just before it strikes a 46-g golf ball at rest on a tee. after the collision, the club head travels (in the same direction) at 31 m/s. find the speed of the golf ball just after impact.

Vb = 41.74m/s

Explanation:

Let Voc be the velocity of the club before the collision, Vfc the velocity of the club after the collision, Vfb the velocity of the ball after the collision.

The masses of the club and the ball expressed in kg are:

mc = 0.16kg       mb = 0.046kg

By conservation of the moment:

Po = Pf

mc*Voc + mb *0 = mc*Vfc + mb*Vfb   Solving for Vfb:

more than, less

less than, more

gravitational energy

electrical energy

kinetic energy

ligh energy