Question

1.5 kg weight ball speed increase 4m/s to 8m/s in 14 seconds find the work

Answer 1

Answer:

acceleration= (v-u) / t

a = (8-4)/14

a =4/14 m/s^2

distance = 4*14 + 0.5*(4/14)*14*14

s = 56 + 28

s. = 84m

therefore ,

work done = force × distance traveled

= mass × acceleration × distance

= 1.5 × (4/14) × 84

work done = 36 Joules.

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