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An object’s speed increases from 10.5 km per hour to 99.8 km per hour in 2.41 seconds. Calculate the acceleration in [tex]m \, s^{-2}[/tex] and express your answer to 3 significant figures.

Answer :

The acceleration of an object is 10.3 m/s². The correct answer for acceleration is 10.3 m/s².

The initial velocity (u) is 10.5 km/h, the final velocity (v) is 99.8 km/h, and the time (t) is 2.41 seconds.

To calculate acceleration:

Acceleration (a) = Change in Velocity (Δv) / Time (t)

First, convert the velocities to meters per second:

1 km/h = 0.27778 m/s

So, the initial velocity (u) is 2.91 m/s, and the final velocity (v) is 27.71 m/s. Now, calculate acceleration (a):

a = (27.71 - 2.91 ) / 2.41

a = 24.80 / 2.41

a = 10.29 m/s²

Therefore, The acceleration is 10.3 m/s².

To know more about the acceleration:

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