Question

A ball is dropped from a building 20m high.then velocity with which it strikes the ground is'v'and time taken to strike is'T' then (v,T) is (assume acceleration due to gravity =10m/s2)

Answer 1

Answer:

Explanation: if you want to know the v and t then

s =20m

g=10m/s^2

assuming that initial velocity was zero

s= 0 + at^2/2

t = 4s

v = u +at

u=0 so

v = 10x4

v=40  .........( if i dident get what you wona said   then elebroate your question   )

Answer 2

Answer:

t=2u÷g. 2×v÷10==0.2v