posted by Leslie on .
A student throws a baseball at a large gong 73 m away and hears the sound of the gong 1.7744 s later. The speed of sound in air is 330 m/s.
What was the average speed of the base-
ball on its way to the gong? (For simplicity, assume its trajectory to be a straight line.)
Answer in units of m/s.
Let the average speed be V, in m/s.
73/V + 73/330 = 1.7744 s
73/V = 1.7744 - 0.2212 = 1.5532
V = 47.0 m/s