An object changes its velocity from 30ms $^{- 1}$ to 40ms $^{- 1}$ in a time interval of 2 seconds. What is its acceleration?

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Solution

$u = 30 m s^{- 1}$
$v = 40 m s^{- 1}$
$t = 2$ sec
$a =$ ?
$a = \frac{v - u}{t} = \frac{40 - 30}{2} = \frac{10}{2} = 5 m s^{- 2}$

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An object changes its velocity from 30ms−1 to 40ms−1 in a time interval of 2 seconds. What is its acceleration?

u=30ms−1 v=40ms−1 t=2 seca= ?a=v−ut=40−302=102=5ms−2

An object changes its velocity from 30ms $^{- 1}$ to 40ms $^{- 1}$ in a time interval of 2 seconds. What is its acceleration?

$u = 30 m s^{- 1}$
$v = 40 m s^{- 1}$
$t = 2$ sec
$a =$ ?
$a = \frac{v - u}{t} = \frac{40 - 30}{2} = \frac{10}{2} = 5 m s^{- 2}$