Ashell fired into the air explodes into two equal fragments. which of the following is conserved.
a. kinetic energy
b. potential energy
c. momentum
d. impulse

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.)

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.