Question

5 kg object changes its velocity from zero metre per second to 15 metre per second find the impulse applied on the object​

Answer 1

Given

A 5 kg object changes its velocity from zero metre per second to 15 metre per second

To Find

The impulse applied on the object​

Solution

We know that

$\rm \longrightarrow J=m(v-u)$

Here

• J = Impulse
• m = Mass
• u = Initial velocity
• v = Final velocity

Units

• J = Newton (N)
• m = kilogram (kg)
• u = metre/second (m/s)
• v = metre/second (m/s)

According to the question

We are asked to find the impulse applied on the object

Therefore

We must find "J"

Given that

​A 5 kg object changes its velocity from zero metre per second to 15 metre per second

Hence

• m = 5 kg
• u = 0 m/s
• v = 15 m/s

Substituting the values

We get

$\rm \longrightarrow J=5(15-0) \ N$

$\rm \longrightarrow J=5(15) \ N$

Therefore

$\rm \longrightarrow J=75 \ N$

Hence

The impulse applied on the object​ = 75 N

Answer 2

Answer:

Given :-

• Initial velocity = 0 m/s
• Final Velocity = 15 m/s
• Mass = 5 kg

To Find :-

Impulse

Solution :-

$\huge\fbox{I = M(v-u)}$

• I is the Impulse
• M is the Mass
• V is the Final Velocity
• U is the Initial velocity

$\sf \mapsto \: I = 5(15 - 0)$

$\sf \mapsto \: I = 5(15)$

$\sf \mapsto \: I = 5 \times 15$

$\frak \pink{I = 75N}$