The height of the ball after the given time of motion is 3.275 m.
The given parameters;
- initial velocity of the ball, u = 4 m/s
- height of fall of the ball, h = 2.5 m
- time of motion, t = 0.5 s
The distance traveled by the ball is calculated as follows;
Thus, the height of the ball after the given time of motion is 3.275 m.
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According to the Doppler effect page I just read it should be D
65 = km/0.360
Cross multiply
km = 65 * 0.360
km = 23.4
The car will travel 23.4 km