A2.1w ipod is used for 30 minutes. how much energy does it use?

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.

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

Why do different substances have diffrent properties