Question

A body of mass 2 kg is throw upword with initial velocity of 20 m/s after 2 s its kinetic energy wii be

Answer 1

mass is 2kg

velocity is 20 m/s

time is 2 secs

Kinetic Energy is 1/2mv^2

let kinetic energy be x

$x = 0.5 \times 2 \times 20 \times 20$

$x = 1 \times 20 \times 20$

$x = 400$

400 J is the answer

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