Answer:16.5 m/s
Explanation:
Given
Velocity of boy
velocity of girl
velocity of ball relative to boy backward
Now We have to find velocity of ball relative to girl
Representing it in vector form
and
therefore velocity of ball relative to girl
Actual velocity of the ping-pong ball= 5 m/s
Explanation:
velocity of ping pong ball because of the shot gun= 4 m/s North
velocity added to the ping-pong ball due to the wind=3 m/s
These velocities are perpendicular to each other. so we use Pythagoras theorem to find the resultant velocity of the ping- pong ball
so the actual velocity of the ping-pong ball =V= √4²+3²
V= √25
V= 5 m/s
Answer:
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