A2.0 kg block is attached to a spring with spring constant 8.0 n/m. while the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 12 cm/s. what is the block's speed at the point when the block is 5.0 cm away from the equilibrium position?

Aprojectile is launched from ground level with an initial velocity of v 0 feet per second. neglecting air resistance, its height in feet t seconds after launch is given by s equals negative 16 t squared plus v 0 t. find the time(s) that the projectile will (a) reach a height of 192 ft and (b) return to the ground when v 0equals112 feet per second. (a) find the time(s) that the projectile will reach a height of 192 ft when v 0equals112 feet per second. select the correct choice below and, if necessary, fill in the answer box to complete your choice.

Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground.what is his gravitational potential energy above the ground?

What causes the formation of ocean currents?