Power Performance
Power is the rate at which energy is transferred, used or transformed. Power is also the rate at which work is performed. Power is measured in Watts or Joules/Second. Work is the amount of energy transfered during an interaction. Power can also be found by the change in energy over time. In baseball, after calculating the work done or the change in energy used from stored potential energy converted to kinetic energy, you can find power. Work can be found in hitting, throwing and fielding. Once work is found, you can establish the power.
A)If a baseball player threw a 145g baseball from right field to home plate which is a total distance of 314ft. How much work was performed on the baseball?
B) If the ball was thrown in 5.6s, how much power was generated to throw the baseball?
A-
F=mag
F=0.145kg x 9.8m/s/s
F=1.421N
∆d= 314ft
∆d=95.71m
W=F x ∆d
W=1.421N x 95.71m
W=136.00J
B-
P=W/∆t
P=136.00J/5.6s
P=24.29J/s
Therefore, there was 136.00J amount of work performed on the baseball & there was 24.29J/s amount of power generated to throw the baseball.
B) If the ball was thrown in 5.6s, how much power was generated to throw the baseball?
A-
F=mag
F=0.145kg x 9.8m/s/s
F=1.421N
∆d= 314ft
∆d=95.71m
W=F x ∆d
W=1.421N x 95.71m
W=136.00J
B-
P=W/∆t
P=136.00J/5.6s
P=24.29J/s
Therefore, there was 136.00J amount of work performed on the baseball & there was 24.29J/s amount of power generated to throw the baseball.