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Question

A particle is projected vertically upwards with velocity 40 m/s. Take g=10m/s2. Find the displacement and distance traveled by the particle during its time of flight.

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Solution

Time of flight is t=2ug=2×4010=8sec
So time taken to reach at maximum height is t1=t/2=4sec
Maximum vertical height d=ut1gt212
d=40×410×422=80m
So after time 4 sec displacement is 80 m and also the distance covered is 80m.
After 8 sec it will reach back to ground, so displacement is zero and total distance traveled is 2d=2×80=160m

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