Question

An object starting from rest covers a distance of 20 km in 2 hrs. What is the speed of the object after 2 hrs?

Answer 1

Put constant values from question into this Newton's equation of motion —

V = u+at

Where,

V=Final velocity of object after 't' seconds

u=Initial velocity of object

a=Acceleration and t= Time

That's it. Answer is 14.8 mm/second square

S=d/t

=20/2

=10m/s

Here 10m/s is final velocity