Question

A tennis ball is moving 30 m/s toward a player who swings a racquet at a velocity of 15 m/s toward the ball. What is the velocity of the ball relative to the racquet?

Answer 1

The velocity of the ball relative the racquet is 15 m/s.

Explanation:

Given;

velocity of the tennis ball,
`V_B` = 30 m/s

Velocity of the racquet swung in opposite direction,
`V_R` = 15 m/s

The velocity of the ball relative the racquet (
`V_R_B`) is calculated as;

`V_R_B = V_B-V_R\\\\\V_(RB) = 30 \ m/s - 15 \ m/s\\\\V_(RB) = 15 \ m/s`

Therefore, the velocity of the ball relative the racquet is 15 m/s.