Question

A car goes around a curve with a radius of 65 meters while traveling at 22 m/s. Calculate the car's centripetal

acceleration
7.4 m/s
0.34 m/s
3.0 m/s
190 m/s
4.3 m/s

Answer 1

7.4 m/
`s^(2)`.

Explanation:

When an object rotates around a fixed center in a circular path of radius R then centripetal force acts on the object ,

Centripetal acceleration equals

`(v^(2) )/(r)` Where,

v is the velocity of the object rotating in circular motion

and r is the radius of the circle.

Here , r = 65 meters.

v = 22 m/s.

Thus centripetal acceleration equals
`(22^(2) )/(65)`

= 7.44 m/
`s^(2)`.

Thus option A is the best option i.e., 7.4 m/
`s^(2)`.