Physics ch6 P&C

Impulse same force 10N acts on cart 2x the 2.5s Impulse=ft

10N x 2 x 2.5s= 50N s

Impulse occurs when ave force of 10N is exerted on cart for 2.5s Impulse=ft

10N x 2.5s= 25N s

2kg blob of putty moves 3m/s slams into 2kg of putty at rest. Speed of two stuck together after colliding mv(final)-mv(initial)

2kg x 3m/s + 2kg= 4kgxv v=3/2 m/s= 1.5m/s

Speed of two blobs if one at rest is 4kg mv(final)-mv(initial)

2kg x 3m/s + 4kg x 0=6kg x v v=65gxm/s / 6kg=1m/s

How much impulse stops 50kg carton sliding at 4m/s when meets rough surface Impulse=change in M

50kg x 4m/s= 200kg m/s

Momentum of 50kg carton slides at 4m/s on icy surface momentum=mv

50kg x 4m/s= 200kg m/s

Impulse on 8kg ball rolling 2m/s when bumps into pillow and stops Impulse=change in M

8kg x 2m/s= 16kg m/s

Momentum of an 8kg bowling ball rolling at 2m/s momentum=mv

8kg x 2m/s= 16kg m/s