Question

An object thrown vertically upwards to a height of 20 cm .Calculate its velocity of thown upwards and time to reach height of 20 cm

Answer 1

Answer is 2m/sec

Solution :

V=0m/sec

S=20cm =1/5m

V^2 - U^2 = 2as

-U^2 = 2 *-10* 1/5

-U^2= -4^2

U=2m/sec