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1. Catching  a ball
2. Applying brake to a moving vehicle
2 4 2
thanx but can you give one more example
3. Pushing any object (for example a chair) changes its velocity from 0 to some positive value
4. Accelerating an already moving vehicle increases its velocity.(In this case the force acting is the thrust generated by the engine of the vehicle)
thank you very much!
When accelerating your bike.
 and pushing  a car which is 
 initially moving in some direction with some speed.
3 4 3
plz click thanks
thank you very much
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