Question

a stone is thrown vertically upward direction with a velocity of 5 metre per second if the acceleration of during its motion is 10m/s in the downward direction what will be the height attained by the stone and now much time will it take to reach there?

Answer 1

1.25 m will be the height attained by stone and 0.5 m will it take to reach there.
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Answer 2

Hii!!! dear here is your answer.....

This answer is verified ✅✅

(when the stone is thrown vertically upwards, then the velocity of a stone goes on decreasing because of force of gravity of earth acting on it in the downward direction.So,the acceleration produced in the stone is negative and hence it is to be done with a minus sign {as ,-10m/s^2}


Initial velocity of stone, u = 5 m/s
Final velocity of stone ,v = 0 m/s
Acceleration, a = -10 m/s^2

Distance travelled , s = ?


${v}^{2} = {u}^{2} + 2as \\ {0}^{2} = {5}^{2} + 2 \times ( - 10) \times s \\ 0 = 25 - 20s \\ 20s = 25 \\ s = \frac{25}{20} \\ s = 1.25 \: m$
Thus, the height attained by the stone will be 1.25 metres.

v = u + at
0 = 5 + (-10) × t
0 = 5 - 10t
10t = 5
t =5/10
t = 0.5 s

Hope it will help you........