32.5k views
1 vote
Red weighs 28 KG. He races through the vent at a speed of 25 meters per

second. What is his kinetic energy?

A. 8,750 Joules
B. 68,000 Joules
C. 400 Joules
D. 33.75 Joules
E. 456.5 Joules

1 Answer

5 votes

Final answer:

The kinetic energy of Red can be calculated using the equation: Kinetic Energy = 1/2 * Mass * Velocity^2. By substituting the given values, the kinetic energy is found to be 8,750 Joules.

Step-by-step explanation:

The kinetic energy of an object can be calculated using the equation:



Kinetic Energy = 1/2 * Mass * Velocity^2



In this case, Red's weight of 28 KG can be treated as his mass. His speed is given as 25 meters per second.



So, substituting these values into the equation:



Kinetic Energy = 1/2 * 28 KG * (25 m/s)^2



Kinetic Energy = 1/2 * 28 KG * 625 m^2/s^2



Kinetic Energy = 8750 Joules



Therefore, the correct answer is A. 8,750 Joules.

User Nayan Dabhi
by
7.9k points