Question

a ball moving with a momentum of 15 kg metre per second strikes against the wall at an angle of 30 degree and is reflected in the same angle calculate the impulses ​

Answer 1

Impulse = Change in Momentum (Δp)=

p

1

2

​

+p

2

2

​

+2p

1

​

p

2

​

cosθ

​

=2pcos(

2

θ

​

)

=2×15cos(

2

60

​

)

=30×

2

3

​

​

=15

3

​

kgm/s