Question

Compare the magnitude of the centripetal acceleration of the car while moving from D to A, to the magnitude of the centripetal acceleration of the car while moving from B to C.

Answer 1

Twice as great

Explanation:

The centripetal acceleration is equal:

`a=(s^2)/(r)`

We know that the velocity is constant, therefore, we calculate in both cases the magnitude of the centripetal acceleration:

`\begin{gathered} (20^2)/(100)=(20^2)/(50) \\ 4=8 \\ r=(8)/(4)=2 \end{gathered}`

Therefore, the centripetal acceleration from D to A is twice the centripetal acceleration from B to C.