A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound of the ball hitting the pins 2.50 s after the ball is released from his hands. What is the speed of the ball? The speed of sound is 340 m/s.

Answer 1

Tb + Ts = 2.5 s.
Ts = 2.5-Tb.

d = Vs*(2.5-Tb) = 16.5 m.
340*(2.5-Tb) = 16.5.
850-340Tb = 16.5.
340Tb = 833.5.
Tb = 2.45 s. = Time of the ball.

d = Vb*Tb = 16.5.
Vb*2.45 = 16.5.
Vb = 6.73 m/s.