Question

An object moves along a straight line with an acceleration of 2m/s2 if its initial speed is 10 metre per second what will be speed 5 seconds later

Answer 1

We have,
a=2m/s^2
u=10m/s
t=5s

We know that,

v=u+at
v=10+(2×5)
v=10+10
v=20

Hence,speed of the object after 5sec=20m/s