Question

A object is projected upwards with velocity of 100ms-1.It will strike the after g=10ms-2

Answer 1

Answer:

20 secs

Explanation:

⇒ u = 100 m/s

⇒ v = 0 m/s

⇒ g = - 10 m/s²

we should find the approximate time taken to reach the ground

so , we know that ,

v = u - gt

implies ,

t = v - u / -g

t = 0 - 100 / - 10

t = 10 seconds .

therefore the approximate time taken to reach the ground is 10 s + 10s = 20s seconds.

Answer 2

according to the given question,

⇒u = 100 m/s

⇒ v = 0 m/s

⇒ g = - 10 m/s²

we should find the approximate time taken to reach the ground 

so ,

we know that ,

v = u - gt 

implies ,

t = v - u / -gt

t = 0 - 100 / - 10t

t = 10 seconds .

therefore the approximate time taken to reach the ground is 10 s + 10s = 20s seconds.

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