A racecar driver circles a racetrack with a constant speed of 110 km/hr.

Which BEST describes the speed and velocity of the car?
A) The speed and velocity remains constant.
B) The speed is constant and velocity is changing.
C) The speed has no impact on the velocity of the car.
D) The velocity changes only if the car slows down or speeds up.

Question

A racecar driver circles a racetrack with a constant speed of 110 km/hr.

Which BEST describes the speed and velocity of the car?
	A) 	The speed and velocity remains constant. 	
	B) 	The speed is constant and velocity is changing. 	
	C) 	The speed has no impact on the velocity of the car. 	
	D) 	The velocity changes only if the car slows down or speeds up.

blues · Answer

It tells you that the rate at which the car travels stays the same. Velocity differs from speed in that it has a 'rate' component, i.e., how fast the car is going. And a 'direction' component, which is changing because the car turns at the corners.

Post further questions in the right darn group.