jeffhuffle17
06.11.2020 •
Physics
2 A box of mass 3 kg is initially at rest. Find the kinetic energy acquired by the box if a force of 5 N is applied to it for 5 s.
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Ответ:
if 5N is applied for 5 seconds then it would move at a constant speed for one second then decrease in speed
Ответ:
3.5kgm/s
Explanation:
We can calculate the momentum of Julieta
momentum = m(v-u)
Momentum = 0.2(20-2.5)
Momentum = 0.2(17.5)
Momentum = 3.5
Hence the momentum of Julieta is 3.5kgm/s