a stone is thrown verticaly upwards with velocity of 49m/s calculate t

1.	a stone is thrown verticaly upwards with velocity of 49m/s calculate the total time taken by ot to reach the surface of earth
Answer» rong>Question:- A stone is thrown vertically upwards with velocity of 49 m/s calculate the total time taken by the to REACH the surface of earth. Solution:- Given, stone thrown vertically upwards with a velocity of 49 m/s. Then calculate the time taken by the stone to reach ground. We have to use SECOND equation of motion to find the time:- u = 49 m/s ; G = 9.8 m/s² ; v = 0 ; s = ? ➣ v² - u² = 2as ➣ 0 − (49)² = 2(−9.8)(s) ➣ -2401 = -19.6 s ➣ s = 2401/19.6 ➣ s = 122.5 m ➣ v = u + at ➣ 0=49 − 9.8 t ➣ t = 5 sec ∴ Total time taken by the stone to return to the surface of the ground is T = 2T = 10s

a stone is thrown verticaly upwards with velocity of 49m/s calculate the total time taken by ot to reach the surface of earth

Answer»

rong>Question:-

A stone is thrown vertically upwards with velocity of 49 m/s calculate the total time taken by the to REACH the surface of earth.

Given,

We have to use SECOND equation of motion to find the time:-

u = 49 m/s ; G = 9.8 m/s² ; v = 0 ; s = ?

➣ v² - u² = 2as

➣ 0 − (49)² = 2(−9.8)(s)

➣ -2401 = -19.6 s

➣ s = 2401/19.6

➣ s = 122.5 m

➣ v = u + at

➣ 0=49 − 9.8 t

➣ t = 5 sec

∴ Total time taken by the stone to return to the surface of the ground is T = 2T = 10s