Question

An object with a mass of 2 kg is thrown upward with initial velocity of 20m/s. After 2 seconds, it's Kinetic energy will be?
$g = 10m {s}^{ - 2}$
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Answer 1

we will use the following equation of motion to get the final velocity after 2 seconds.

V = u - gt

U = 20 m/s

g = 10

t = 2

V = 20 - 2 × 10

V = 20 - 20

V = 0

K.E = 1/2mv²

m = 2

v = 0

K.E = 0.5 × 0 × 2 = 0

= 0

hope it help u..