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CBSE Class 9 Answered

why no force is required to move an object with constant velocity?
Asked by Amanjot | 01 Jul, 2016, 09:46: PM
answered-by-expert Expert Answer
A body is to be moved with a constant velocity. So, its velocity should not change.
 
When velocity does not change, acceleration is zero.
 
Now, according to Newton's second law, F = ma
 
If there is no acceleration, then there is no force required, F = m×0 = 0
 
Hence, no force is required to move an object with constant velocity.
Answered by Romal Bhansali | 04 Jul, 2016, 10:24: AM
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