Answer:
4.9 kg.m/s.
Explanation:
Given that
mass ,m = 0.7 kg
Initial speed , u = 5 m/s ( Towards + x direction)
Final speed ,v= -2 m/s ( Towards - x direction)
We know that linear momentum is given as
P = Mass x velocity
Change in the linear momentum ΔP will be
ΔP = m ( v - u)
Now by putting the values in the above equation ,we get'
ΔP= 0.7 ( -2 - 5 ) kg.m/s
ΔP= - 4.9 kg.m/s
The magnitude of the change in the linear momentum will be 4.9 kg.m/s.
