Question

A force of 1000 Newton is applied on a 25kgm mass for 5 second. what would be its velocity
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Answer 1

Answer:

It's velocity would be 200 m/s.

Explanation:

Given that:

Force (F) = 1000 N

Mass (m) = 25 kg

Time (t) = 5 sec

Initial velocity (u) = 0

To find:

Velocity

Solution:

According to the first equation of motion, we get

v = u + at

We will use this formula to find out velocity but first we need to find out the acceleration.

We know that,

a = F/m

where a = acceleration

F = force

and m = mass

By substituting the known values, we get

a = 1000/25

= 40 m/s^{2}

2

Now,

v = u + at

→ v = 0 + 40 × 5

→ v = 0 + 200 = 200 m/s

\therefore∴ v = 200 m/s.

Answer 2

Required Answer:-

We have:

• Force acting = 1000 N
• Mass = 25 kg
• Time taken = 5 s

To FinD:

• Velocity of the body?

Step-by-Step Explanation:

First finding the accleration of the body by using the Newton's second law of motion:

• F = ma

Plugging the values of F and m,

⇒ a = F / m

⇒ a = 1000 N / 25 kg

⇒ a = 40 m/s²

Now we have the accleration, initial velocity considering 0, as the body starts from rest and time taken is also provided. By using first equation of motion,

• v = u + at

Plugging the values,

⇒ v = 0 + 40 × 5 m/s

⇒ v = 200 m/s

Hence:

The final velocity of the body is 200 m/s.