science
Grade-9
Easy

Question

A racing car started from rest and increased its speed to 120 m/s in a minute. The acceleration of the car is ___ m/s2.

hintHint:

2 m/s²

The correct answer is: 2


    Given:
    Initial velocity (u) = 0ms-1
    Final velocity (v) = 120ms-1
    Time taken (t) = 60s
    To find:
    Acceleration (a) =?
    Solution:
    v space equals space u space plus a t space
120 space equals space 0 space plus space a space cross times space 60 space
a space equals space 120 over 60 space equals space 2 m s to the power of negative 2 end exponent
    Answer:
    The acceleration of the car is 2ms-2

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