Applying the Conservation Laws

PLEASE SHOW ALL WORK WITH ANSWERS!!! 8.60 A 2.5 kg block collides with a horizontal spring of negligible mass and spring constant k=320 N/m. The block compress the spring by 8.5 cm from its rest position. How fast was the block going when it hit the spring if the frictional coefficient between the block and the horizontal surface is 0.40?

Elastic Collision in One Dimension

PLEASE SHOW ALL WORK WITH ANSWERS!!! 8.22 Blocks of mass m and 2 m are positioned on a semicircular frictionless track at a height of R/4 above the lowest point. The blocks are released simultaneously and collide elastically. How high does each block rise after the collision?

Elastic Collision in One Dimension

PLEASE SHOW ALL WORK WITH CORRECT ANSWER!!! PLEASE SHOW ALL WORK WITH CORRECT ANSWER!!!! 8. 19 A ball of mass 2 m is projected upward with speed Vo(or V=0)from the floor. Another ball of mass m is hung from the ceiling by a light string at a height h directly above the first ball, so that the projected ball collides with it. Derive an expression for the height about the floor to which the second ball will rise as a function of Vo, h, and g, assuming that the collision is elastic.

nature of momentum

Imaginne a small car on a frictionless trail. the car has mirrors on its front and rear, facing the trail. Now if we aim a very strong laser beam at either of the mirrors, the laser will exert a momentum on the car, causing it to move at the beam's direction (assuming the car is in neutral gear). My question is: If we aim equal beams at each mirror, will the combine force will object the car accelertion when the car using its own power? For comparison I'm thinking of a sail mounted on the car's top, which will object and slow the acceleration in either direction. And a second question: once the car reached a certain velocity and we are turning the engine off, will the car remain in a con... click for more

periodic motion/SHM

A fisherman's scale stretches 2.8cm when a 3.7kg fish hangs from it. (a)what is the spring constant? (b)what will be the amplitude and frequency of vibration if the fish is pulled down 2.5cm more and released so that it vibrates up and down? *please explain this as simply and clearly as possible, thank you so much :)