Question

A car moving with a speed (velocity) 10m/s accelerates at a rate of 5m/second square.Find the velocity when the car has travelled 30m​

Answer 1

Answer:

u=10m/s

a=5m/s^2

s=30

v=?

Using 3rd equation of motion

v^2=u^2+2 as

v^2=100+2×5×30

v^2=400

v=20 m/s

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Answer 2

Answer:

Explanation:

INITIAL VELOCITY,U = 10 M/S.

ACCELERATION , A= 5 M/S²

DISTANCE TRAVELLED , S= 30 M

FINAL VELOCITY , V = ?

ACCORDING TO NEWTON'S LAWS OF MOTION:

V²-U²=2 A*S

V²- 10²= 2*5*30

V²-100= 300

V²= 300+100

V²= 400

V = √400

V = 20 M/S.

THEREFORE FINAL VELOCITY OF THE CAR = 20 M/S.

HOPE THIS HELPS.