Question

A body of mass 5kg is moving with a velocity of 10m/s. It is acted upon by a force of 20 N. Find the velocity of the body after 1 sec

Answer 1

$\huge\mathfrak\purple{Here \:is \:the\: answer}$

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Given :

M = 5 kg

u = 10 m/s

F = 20 N

t = 1 sec

To find :

v = ?

According to second law of motion :

Force = $mass\times acceleration$

acceleration = $\frac{Force}{mass}$

a = $\frac{20}{5}$

a = 4 m/s

According to first equation of motion :

V = u + at

V = $10+ 4 \times 1$

V = 10+4

$\huge\boxed{v = 14 m/s}$

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$\huge\mathfrak\purple{Hope \:it \:helps}$

Answer 2

Given :

M = 5 kg

u = 10 m/s

F = 20 N

t = 1 sec

To find :

v = ?

According to second law of motion :

Force = $mass\times acceleration$

acceleration = $\frac{Force}{mass}$

a = $\frac{20}{5}$

a = 4 m/s

According to first equation of motion :

V = u + at

V = 10+ 4 *1

V = 10+4

$\huge\boxed{v = 14 m/s}$