A toy hover craft with mass 12 kg speeds along a track and crashes into a safety spring with spring constant 146 N/m, compressing it a distance of 0.92 m. Determine the speed of the hover craft just before it makes contact with the safety spring. (Ignore friction)

Acar traveling at 22 m/s starts to decelerate steadily. it comes to a complete stop in 15 seconds. what is it’s acceleration?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.

Area around a charged object where the objects can exert a force on another charged objects is an electric