Question

A body start moving with an initial velocity of 50m/s and acceleration 20m/s sq how much distance it will cover .In next 4m/s . Also calculate average speed during this time

Answer 1

using the formula
s=ut+1/2at^2
s=20(4)+1/2(20)(4^2)
s=80+160
s=240m

average speed=total distance/time taken
=240/4=60m/s