Question
Physics Question on laws of motion
A force of 10 N acts on a body of mass 0.5 kg for 0.25 second starting from rest. What is its momentum now?
A
2.5 N/s
B
0.25 N/s
C
0.5 N/s
D
0.75 N/s
Answer
2.5 N/s
Explanation
Solution
Given :
F = 10 N
m = 0.5 kg
Δt = 0.25s
As we know Impulse, I = pf - pi
So, I = F × Δt
= 10 × 0.25
= 2.5 N/s
So, the correct option is (A) : 2.5 N/s