Question

an object dropped from a cliff moves down with an acceleration of 10m/s find its speed after 2 sec it was dropped

Answer 1

a=10 m/s

v=u+at
u=0(free fall)
v=10*2
=20m/s

Answer 2

Answer: we know that

V=u+at (here acceleration is given

10 m/s2)

V=(0+10×2) m/s

V=(0+20) m/s

V=20m/s

Explanation: when the object will initially in hand its initial velocity will be zero