Question

Q.2
A body is dropped from a height of 320m. The acceleration due to the gravity is 10m/s?
a) How long does it take to reach the ground? (b) What is the velocity with which it will
strike the ground?​

Answer 1

Refer the attachment

hope it helps

Answer 2

Answer:

Explanation:given u=0

g=10 m /s2

h=320 m

v 2 = u 2 + 2gs

v 2 = 2× 10× 320

v 2 = 6400 m/s

v = 80m/s

Then

t= v- u/ g

t= 80/10=8 sec..