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A stone of mass 500 g is thrown vertically upwards with a velocity of 15m/s-1. Calculate:
A stone of mass 500 g is thrown vertically upwards with a velocity of 15m/s-1. Calculate:
Class 10 | ICSE | Physics | Selina | Work Energy
A stone of mass 500 g is thrown vertically upwards with a velocity of 15m/s-1. Calculate:

(a) the potential energy at the greatest height,

(b) the kinetic energy on reaching the ground

(c) the total energy at its half waypoint.

Solutions:

(a) Potential energy at maximum height = initial kinetic energy

mgh = 1 / 2 mv2v= 1 / 2 × 0.500 × 15 × 15

Potential energy at maximum height = 56.25J

(b) Kinetic energy on reaching the ground is equal to the potential energy at the greatest height

Therefore, Kinetic energy = 56.25J

(c) Total energy at its halfway point

= 1 / 2 (K + U) = 56.25J

i

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