Question

A body projected upward is at same height from ground at t = 3 s and t = 7 s. Find its time of flight. (Take
g=10m/s2]​

Answer 1

Answer:

10 seconds

Explanation:

Short trick:

Whenever a projectile is at same height at two given times take mean of them that will be half of time of flight

now

(3+7)÷2 =5

for total time of flight double it

5×2 = 10 sec

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