Question

Q.14 a motor car is moving with speed 30 ms–1 on a circular path of radius 500 m. its speed is increasing at a rate of 2 ms–2, the net acceleration of the car is

Answer 1

The acceleration has 2 components : tangential (at= 2 m/s²) and centripetal (ar=v²/r=302500=1.8 m/s²).

Net acceleration = √(2²+1.8²) = 2.69 m/s²