A car speeds up from 20 m/s to 40 m/s in 10 seconds. What is the car's average acceleration?
a= vf-vi/t (1 point)
20 m/s/s
2 m/s/s
5 m/s/s
1 m/s/s
This graph shows
constant velocity
constant acceleration
constant position
no motion
A change in velocity over time is known as ________.
distance
acceleration
speed
displacement
A merry-go round spinning at a constant speed is accelerating.
Accelerating objects speed up, slow down and _______________.
have constant speed
change velocity
change direction
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