Question

a state of mass 0.10 kgis projected vertically upward by expanding 80J of energy, how high the stone rises?​

Answer 1

Answer:

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Answer 2

Given

The mass of stone(m)=0.1kg

Velocity of the stone(v)=30m/s

As you know, the kinetic energy of the stone

(KE)=0.5mv

2

=0.5×0.1×(30)

2

=45J

The kinetic energy of stone=25%less

than the potential energyof the catapult

That is ,KE(stone)=75% PE(catapult)

45J=0.75×PE

Therefore,PE=

0.75

45

=60J