Apitcher throws a 0.15 kg baseball so that it crosses home plate horizontally with a speed of 10 m/s. it is hit straight back at the pitcher with a final speed of 24 m/s. assume the direction of the initial motion of the baseball to be positive.

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?