Question

there is a block of mass 40 kg.A force of 60 Newton is applied upon it.Calculate the time in which the block will acquire a velocity of 30m/s

Answer 1

By FBD of the block

F = ma

60 = 40a

a = 60/40

Therefore the acceleration of block is 3/2 m/s²

By v = u + at

30 = 0 + 3/2 × t

t = 30 × 2 / 3 = 20

The block will aquire velocity of 30 m/s in 20 seconds.  

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