Question

The velocity of a body of mass 2 kg changes
20 ms to 30ms Calculate the impulse?
from
Ans:​

Answer 1

Explanation:

DATA:

mass = m = 2 kg

initial velocity = vi = 20 ms

final velocity = vf = 30 m/s

impulse = J = ?

FORMULA:

• J = m∆v

SOLUTION:

J= m∆v

J = 2 ( 30 - 20)

J = 2× 10

J = 20 NS

RESULT:

impulse = J = 20 NS