Question

Force of 1000 Newton is applied on a 25 kg mass for 5 seconds. What would be its velocity?​

Answer 1

Answer:

impulse = force * time

= 1000N* 5s=5000Ns

impulse=change in momentum = mass*velocity

velocity=change in momentum/mass

=5000/25=200

so velocity is 200m/s

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Answer 2

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$^{2}$

Now,

v = u + at

→ v = 0 + 40 × 5

→ v = 0 + 200 = 200 m/s

$\therefore$ v = 200 m/s.