Question

2. A body of mass 10 kg is travelling with uniform speed of 5 m/s. Its kinetic energy is​

Answer 1

Answer:

KE = 1/2mv² Therefore, the kinetic energy of the body is 125 Joules.. Hence, Option (b) 125 J is the correct answer .

Explanation:

THIS IS THE CORRECT ANSWER

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Answer 2

$\huge \fcolorbox{maroon}{pink}{ \bf \green{125 \: J}}$

Explanation:

QUESTION :-

A body of mass 10 kg is travelling with uniform speed of 5 m/s. It's Kinetic Energy is

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SOLUTION :-

A.T.Q.

Mass (m) = 10 kg

Velocity (v) = 5 m/s

Now,

We should remember,

$\large \red {\underbrace{ \purple{ \boxed{ \green{ E_{k} }= \blue{{\frac{1}{2} mv}^{2}} }}}}$

So, Here

$\bf E_{k} = \frac{1}{\cancel2} \times \cancel{10}^{5}kg \times {(5m/s)}^{2} \\ \\ \bf = 5 \times {5}^{2} \: kg .{m}^{2} / {s}^{2} \\ \\ \bf= 5 \times 25 \: J \\ \\ \bf = \large \color{maroon}{125 \:J}$

Hence,

It's Kinetic Energy is 125 J.

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Hope it helps.

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