Question

A body is thrown upward with 10 m/s from an tower of height 100 m.find the time and velocity when the body reaches the ground?

Answer 1

Answer:

u = 100

At maximum height v = 0

s = maximum height

acceleration a = - 10

3rd equation of motion

v ^2 = u^2 + 2as

0 = 100^2 + 2(-10)s

s = 10000/20

s = 500 meter

To find time taken (t):

By first equation of motion

v = u + at

0 = 100 + (-10) t

t = 10 s

To find velocity after 5 s (v):

v = u + at

v = 100 + (-10)5

v = 50m/s

hope help u mate ❤

Answer 2

speed=10m/s

distance=100m

Time =d/s

time=100/10

time=10second