Question

body of mass 5 kg is moving with a velocity of 10 M per second a force is applied to it so that in 25 seconds it attains a velocity of 35 M per second calculate the value of the force applied applied to the body

Answer 1

u=10 v=35 t=23
v=u+at
35=10+23a
a=15/23×5
a=3.2 ms^-2
force=mass ×acceleration
=3.2N

Answer 2

☆ Correct Question ☆

A body of mass 5 kg is moving with a velocity of 10m/s. A force is applied to it so that in 25 seconds so it attains a velocity of 35 m/s . Calculate the value of the force applied to the body.

☆ Given ☆

• Mass of the body ( m ) = 5 kg

• Intial velocity ( u ) = 10 m/s

• Final velocity ( v ) = 35 m/s

• Time ( t ) = 25 seconds

☆ To find ☆

• Total force applied to the body.

☆ Formula to be used ☆

• F = ma

Where,

• F is called force.
• m is called mass
• a is called acceleration.

☆ Solution ☆

At first we'll find total acceleration-

Formula

$\huge\sf\purple {a = \frac{v - u}{t}}$

Where,

• a = acceleration
• v = final velocity
• u = intial velocity
• t = time

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Putting values

$\sf\orange {a = \frac{35m/s - 10m/s}{25seconds}}$

$\sf\orange {\implies a = \frac{25m/s}{25seconds} = 1m/s}$

Now we have,

• a ( acceleration ) = 1 m/s
• m ( mass ) = 5kg

Formula:-

$\huge\sf\orange { Force = mass \times acceleration }$

Putting values-

$\small\sf\green { \implies f = 5 \times 1}$

$\sf\green { \implies f = 5N}$

Therefore, 5N is the total force applied to the body.

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