Question

A car is traveling 40 kilometers an hour. It turns right at 40 kilometers per hour. The action the car takes changes its

A. Speed, but not its acceleration
B. Speed
C. Acceleration
D. Direction, but not its acceleration

Answer 1

Answer: C. Acceleration

Step-by-step explanation:

Acceleration
`a` is defined as the variation of Velocity
`\Delta V` in time
`\Delta t` :

`a=(\Delta V)/(\Delta t)`

In addition, acceleration is a vector quantity (like velocity) and as a vctor it has magnitude and direction. When one of this aspects changes (or both) acceleration changes as well.

So, if the car keeps the same speed (
`40 km/h`) but changes its direction, its acceleration changes.