Question

A 20 kg truck drives in a circle of radius 4 m at 10m/s. What is the centripetal acceleration of the truck?

A. 15 m/s/s
B. 25 m/s/s
C. 20 m/s/s
D. 30 m/s/s

Answer 1

B. 25 m/s/s

Step-by-step explanation:

Centripetal acceleration is the square of the tangential velocity divided by the radius of curvature.

a = v² / r

Given v = 10 m/s and r = 4 m:

a = (10 m/s)² / 4 m

a = 25 m/s²