PLZ HELP IM REALLY CONFUSED AND I DONT WANNA FAIL THIS CLASS!! 20 points! A boy is playing catch with his friend he throws a ball straight up when it leaves his hand the ball to KAG is traveling 10 M/S what’s balls kinetic energy just as it leaves the boys Hand what is the potential energy of the ball when it reaches the highest point?

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

Boiling water is an example of physical change. true or false