A 0.2 N basketball strikes the ground in 0.13 seconds. What is the impulse of the ball as it hits the ground?
0.007 N s
0.026 N s THIS ONE
0.033 N s
0.8 N s
A ball has an impulse of 8.4 N s and is contact with a baseball bat for 0.3 s. What is the force of the swing of the bat?
28 N THIS ONE
42 N
56 N
96 N
A 15 kg dog is running at 4 m/s picks up a 1 kg stationary bone and continues to run. What is the speed of the dog as it runs with its newfound treasure?
0 m/s
2.5 m/s
3.75 m/s THIS ONE
5.83 m/s