oco serves a tennis ball at vs = 50 m/s and charges the net at vc = 10 m/s. The opponent, x = 25 m away on the other side of the
1 answer:
Answer:
3.055 m
Step-by-step explanation:
In this solution we will use next notation:
= time elapsed since oco serves the ball until it reaches its opponent.
= time elapsed since the opponent returns the ball until it reaches oco.
d= Total distance traveled by Oco since serving the ball until meeting the return.
We know that oco serves at vs = 50 m/s and her opponent is x=25 m away. Then, t_1 is given by
To compute t_2 observe that the return speed is 12.5 m/s and the distance that the ball will travel is . Then,
.
Therefore,
Finally, as Oco started 12.5m away from the net, when she meets the return she will be
away from the net.
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