Question

A stone is throne vertically upwards with a velocity of4.9 meter per second.Calculate(i).the time taken to reach the maximum height

Answer 1

A stone is throne vertical upwards

Answer 2

Answer:

0.5 sec

Explanation:

the initial velocity = vi = 4.9 m/s  

final velocity = vf = 0 m/s

and acceleration = a = -9.8 m/s² bcoz a=g but as it is defying gravity so -ve sign will be considered

a = ( vf - vi ) / t

So,

t = ( vf - vi ) / a

t = (0-4.9) /-9.8

t = -49/10 × 10/-98

t = -49/-98

t = 1/2

t = 0.5 sec