Q.
A ball is thrown into the air and follows a parabolic trajectory. At the highest point in the trajectory
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a
the velocity is zero, but the acceleration is not zero
b
both the velocity and the acceleration are zero
c
the acceleration is zero, but the velocity is not zero
d
neither the acceleration nor the velocity are zero
answer is D.
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Detailed Solution
At highest point, speed is not zero and acceleration is g downward.
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