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In Physics / High School | 2014-10-21

If you speed up from rest to 12 m/s in 3 seconds, what is your acceleration?

A. 4 m
B. 4 m/s²
C. 36 m
D. 36 m/s

Asked by KennediSioux

Answer (3)

The answer id 4 m/s/s this is because 12/3 = 4 and an easy way to get the units is put the two together
Acceleration = m/s (Meters per second) Time = s (Seconds)
m/s/s = Meters per second/ Per second

Answered by jamie98payton | 2024-06-10

b) 4m/s/s
This is because you divide the speed you reach, by the time it takes to get to that speed:
12m/s ÷ 3s = 4m/s/s
The units come from what you divide, meters per second ÷ seconds this can be written as m/s/s or ms-²

Answered by seanthecelt1 | 2024-06-10

The acceleration when speeding up from rest to a velocity of 12 m/s in 3 seconds is calculated to be 4 m/s². Therefore, the correct answer is option B. 4 m/s².
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Answered by jamie98payton | 2024-10-01

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