Question

a body of mass 4 kg is thrown vertically upwards with a speed of 30 m/s if g =10m/s . potential energy of the body as its maximum height

Answer 1

◆ ∆πswer ◆

The max Height of body =

v^2 = u^2 + 2as

0 = 900 - 2 ×10 × s

s = 45 m

so , GPE :

MGH = 4×10×45 = 1800 J

#superman

Answer 2

The potential energy of the body as its maximum height is 1800 J.

Explanation:

Mass of body is 4 kg

The body is thrown upward with a speed of 30 m/s. It is required to find the potential energy of the body as its maximum height.

The total energy of the ball will remain constant. The potential energy gained is equal to its kinetic energy lost. So,

$P=K=\dfrac{1}{2}mv^2\\\\P=\dfrac{1}{2}\times 4\times (30)^2\\\\P=1800\ J$

So, the potential energy of the body as its maximum height is 1800 J.

Learn more,

Conservation of energy

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