A ball is thrown up from the ground with a velocity of 30 m/s. It has a downward acceleration of 10 m/s2. At what height from the ground is the ball after 4 seconds?
rishabhpy3:
So we have to tell at what distance it after four seconds when it was thrown?
for thrown,you have to keep plus inthe place of minus the same formula I have used
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height from the ground after 4 seconds,
=ut-1/2gt²=120-80=40 m.
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