7. A bullet of mass 100 g is fired into a stationary target of mass 4.o kg. The target is mounted on low-friction wheels and moves off at a velocity of 5.0 ms-1 when the bullet enters it. The bullet stays in the target. Calculate the velocity of the bullet before it strikes the target.

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

A( developed during the process of technology design