The world's demand for fuel is ever increasing. identify the fuel type predicted to run out within the next hundred years. a) fossil fuels b) nuclear c) solar d) wood

Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?