Question

a stone is dropped from a height of 20m . (I) how long will it take to reach the ground. (ii) what will be it's speed when it hits the ground? g : 10m/square two​

Answer 1

Answer:

hlo dear ♥️

Explanation:

Distance (s) =20 m

Initial velocity =0m/s

g=10 m/s^2

By using the formula:

v^2 =u2 +2as

v^2=0 +2×10×20

v^2=400

v^2 = √400

v=20m/s

For calculating time:

V=u+at

20=0+10×t

t= 10/20

t=2 sec

• The the stone will hit the ground with a velocity of 20 m/s in sec.