Question

**WILL MEDAL**
Which of the following has no acceleration?

A.
a satellite orbiting at a constant speed

B.
a person running once around a track at a constant speed

C.
a car making a turn at a constant speed

D.
a person running 100 m straight across a field at a constant speed
(I think its A or B)

Answer 1

D

Answer 2

Oh ok thx(:

Answer 3

You are correct Sumit. Let me just clarify it why: take note that acceleration is the rate of change of VELOCITY NOT SPEED. spped varies its direction, whereas velocity has one only. And D tells you, because the track is straight, having one direction.

Answer 4

Yes he is and thx u both I got 100%

Answer 5

Nice!