Two balls of equal masses, one at rest, the other moving with a speed V directly toward the other. Assuming the collision is partially elastic with a coefficient of restitution of 0.8, what final velocities, in terms of V, would the two balls end up with

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

Which levels of government establish and implement educational requirements for minors

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.