diego is playing basketball. while running at 7 km/h toward gino, he passes the ball to gino horizontally…

diego is playing basketball. while running at 7 km/h toward gino, he passes the ball to gino horizontally. the ball travels at 20 km/h relative to diego. what is the speed of the ball relative to gino? 0 km/h 7 km/h 20 km/h 27 km/h

diego is playing basketball. while running at 7 km/h toward gino, he passes the ball to gino horizontally. the ball travels at 20 km/h relative to diego. what is the speed of the ball relative to gino? 0 km/h 7 km/h 20 km/h 27 km/h

Answer

Explanation:

Step1: Identify relative - motion concept

The speed of the ball relative to Gino is the sum of Diego's speed and the ball's speed relative to Diego since they are in the same direction.

Step2: Calculate relative speed

Let $v_{D}$ be Diego's speed and $v_{bD}$ be the ball's speed relative to Diego. The speed of the ball relative to Gino $v_{bG}=v_{D}+v_{bD}$. Given $v_{D} = 7$ km/h and $v_{bD}=20$ km/h, then $v_{bG}=7 + 20=27$ km/h.

Answer:

D. 27 km/h