Question

a boy can jump 5m vertically what must be the inital velicity of the boy assume g=9.8m/s​

Answer 1

Answer:

Here, Height= 5 m

For motion opposite to the gravity

v=0 and g= -9.8 m/s²

According third equation of motion

v²=u²+2as

0=u²+2(-9.8)×5

98=u²

u=9.89 m/s (approx)

Hence,

Initial velocity is 9.89 m/s