Answers

2015-06-13T17:40:09+05:30

If it rises at constant speed, the dv/dt=0, hence acceleration=o

From Newton second law Fresultant= ma, then if a=0ms-2,

Resultant force= zero

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2015-06-13T18:06:59+05:30
Zero because when the speed is constant the acceleration is zero As force=mass×acceleration If acceleration is zero Then force is also zero F=m×0 F=0
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