Question

if a coin is tossed up with velocity 4 m/s in air and return back in 0.8 sec .find final velocity and height gained​

Answer 1

Answer:

It's speed reduces by an amount of 9.8 m/s in every second. It will go up till its speed reduces to zero.

Hence time for this is 4/9.8 = 0.408 s . After this it falls down. Hence the distance travelled up is the maximum height.

Height = averages speed * time = 2*0.408 = 0.816 m

Up to 0.816 m it will go up

Explanation:

MARK BRAINLIEST