Question

A coin is dropped from a height and reaches the ground in 2 seconds. Neglecting air resistance, from what height (in meters) was the coin dropped?

Answer 1

Coin is dropped from a height of 19.62 m

Step-by-step explanation:

We have given time t = 2 sec

As coin is drop means its initial velocity u = 0 m/sec

We have to find the height from which coin is dropped

From second equation of motion we know that

`h=ut+(1)/(2)gt^2`

So height
`h=0*2+(1)/(2)* 9.81* 2^2=19.62m`

So coin is dropped from a height of 19.62 m