Question

calculate the momentum of a 5 kg ball moving with a velocity of to m/s towards the south​

Answer 1

Answer:

A ball moving with a momentum of 5kgm/s strikes against a wall at angle of 45°

and is deflected at the same angle. Calculate the change in momentum.

Explanation:

P=5kgm/s

θ=45

0

from the figure given above, there is no change in perpendicular component and cancel each other.

The initial momentum along the x-axis,

P

i

=Pcosθ

The final momentum along the x-axis,

P

f

=−Pcosθ

So, change in momentum,

ΔP=P

f

−P

i

ΔP=−2Pcosθ

ΔP=−2×5×cos45

0

ΔP=−7.071kgm/s

I hope this helps u