1. A ball rolling down a ramp accelerales from 0 cm/s to 40 cm/s in 10 seconds. What is ils acceleralion?

4 cm/s².

Explanation:

From the question given above, the following data were obtained from it:

Initial velocity (u) = 0 cm/s

Final velocity (v) = 40 cm/s

Time (t) = 10 s

Acceleration (a) =?

Acceleration is simply defined as the rate of change of velocity with time. Mathematically, it is expressed as follow:

Acceleration (a) = Change in velocity /time

Acceleration (a) = [final velocity (v) – initial velocity (u)] /time (t)

a = (v – u) /t

With the above formula, we can obtain the acceleration of the ball as follow:

Initial velocity (u) = 0 cm/s

Final velocity (v) = 40 cm/s

Time (t) = 10 s

Acceleration (a) =?

a = (v – u) /t

a = (40 – 0) / 10

a = 40/10

a = 4 cm/s²

Therefore, the acceleration of the ball is 4 cm/s²

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