| Don't let
his size fool you. This kid plays a wicked game of tennis! His dad coached
him in the laws of physics so he can rapidly calculate the proper velocity
for the ball to just clear the 1.0-meter high net. At the moment, he is
10 m from the net. When the ball reaches his racquet it is 20 cm above
the ground.
To win this set, you'll need to calculate the velocity necessary for the ball to just clear the net. Remember, velocity is a vector! (Hint: first find the time, then the initial horizontal and vertical velocity components...) |
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