Question

A ball is gently dropped from a height of 20 m. If its velocity
will it strike the ground? After what time will it strike the
ground?
increases uniformly at the rate of 10 m s?, with what velocity​

Answer 1

Answer:

u =0 ,s=20 ,a=10

v*2=u*2+2as

v×v= 0+2×10×20

v×v=200

v=√200

Explanation:

S= ut+1/2at×t

20=0+1/2×10×t×t

20/5=t×t

√4=t×t

2=t