Question
A student rides her bicycle down a hill. Together, she and the bicycle have a mass of 56 kilograms. She is moving at 11 meters per second. What is her kinetic energy?(1 point)
Responses
13,552 J
13,552 J
17,248 J
17,248 J
6,776 J
6,776 J
3,388 J
The kinetic energy of an object can be calculated using the formula:
Kinetic Energy = 1/2 * mass * velocity^2
Here, the mass is 56 kilograms and the velocity is 11 meters per second.
Plugging in these values into the formula:
Kinetic Energy = 1/2 * 56 kg * (11 m/s)^2
= 1/2 * 56 kg * 121 m^2/s^2
= 56 kg * 60.5 m^2/s^2
= 3398 J
So, the correct answer is 3,398 J.