Question

A car starts from rest and accelerates uniformly at 2m/s2 for 10 sec. Find the velocity and displacement at end of 10seconds

Answer 1

Hey there,

According to the 1st LAW OF MOTION-
v=u+at
Substituting value, we get-

v=20 m/s²

Now from 3rd LAW OF MOTION-
v²-u²=2as
Substituting values, we get

400=4s
So the displacement(s)
=100 m

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07161020
Ace

Answer 2

v = u + at
= 0 + (2 m/s² × 10 s)
= 20 m/s
Velocity at the end of 10 seconds is 20 m/s

S = ut + 0.5at²
= 0 + (0.5 × 2 m/s² × (10 s)²)
= 100 m
Displacement at the end of 10 seconds is 100 m