Question 22 of 32 When a pitcher throws a baseball, it reaches a top speed of 42 m/s. If the
baseball takes 2 seconds to travel from the pitcher to the catcher, what is its
acceleration? (Assume the ball is moving at 0 m/s right before it leaves the
pitcher's hand.)

A 36 m/s
B 48 m/s
C 15 m/s
D 21 m/s
HELP!

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.