A2-kg collar is released from rest at a and slides down the inclined fixed rod in the vertical plane. the coefficient of kinetic friction is 0.40. calculate (a) the velocity v of the collar as it strikes the spring and (b) the maximum deflection x of the spring.

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain

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.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?