Answer: 2.390 J (joules).
Step-by-step explanation:
Given:
Mass of tennis ball = 0.051 kg
Velocity of tennis ball = 9.7 m/s
To find:
Kinetic energy of the tennis ball
Solution:
Using the formula for kinetic energy:
Kinetic energy = (1/2) * mass * velocity^2
Plugging in the values:
Kinetic energy = (1/2) * 0.051 kg * (9.7 m/s)^2
Kinetic energy = (1/2) * 0.051 kg * 94.09 m^2/s^2
Kinetic energy = 2.390 J
Therefore, the kinetic energy of a 0.051 kg tennis ball moving at 9.7 m/s is 2.390 J (joules).