Which car is accelerating?
a. a car that is unmoving
b. a car that rounds a curve at a constant speed***
c. a car that travels in a straight line at a constant speed
The correct answer is:
b. a car that rounds a curve at a constant speed
Explanation:
When a car rounds a curve at a constant speed, it is constantly changing its direction. Due to the change in direction, the car is actually accelerating, even though its speed remains the same. Acceleration is defined as any change in velocity, which includes changes in both speed and direction. In this case, the car's direction is changing, so it is considered to be accelerating.
correct
Ac = v^2/R