Question

A trolley is going down on an inclined plane has an acceleration of 2 cm/s² what will its velocity be 3 seconds after the start?

Answer 1

a=2cm/s2
t=3s
u=0cm/s

v = u + at
=0+2×3
=6cm/s

Answer 2

given
u=0m/s
t=3sec
a=2cm/s² = 0.02m/s²
v=?

So, by using equation of motion
v-u=at
v=(0.02x3)+0
= 0.06m/s or 6cm/s