A 30 kg block that has Velatoontis sides slides across a level surface of slick ice and hits a 20 kg block that is initially at rest and has sticky Velcro on its surface. The blocks stick together and move
off in the same direction the 3.0 kg block was moving. Their speed after the collision is 10.0 m/s. How
fast was the 3.0 kg block moving before the collision?

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?