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.
Hint:
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](data:image/png;base64,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)
Answer:
The acceleration of the car is 2ms-2
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