Question
What is the Kinetic Energy of a 155 kg object that is moving at a speed of 20 m/s?
a. 3100 J
b. 18,619 J
c. 2,402,500 J
d. 31,000 J
a. 3100 J
b. 18,619 J
c. 2,402,500 J
d. 31,000 J
Answers
Answered by
GPT 3.5
To calculate the kinetic energy (KE), we use the formula:
KE = 1/2 * mass * velocity^2
Given:
Mass (m) = 155 kg
Velocity (v) = 20 m/s
Plugging the values into the formula:
KE = 1/2 * 155 kg * (20 m/s)^2
KE = 0.5 * 155 kg * 400 m^2/s^2
KE = 31,000 J
Therefore, the kinetic energy of the object is 31,000 J.
The correct option is d. 31,000 J.
KE = 1/2 * mass * velocity^2
Given:
Mass (m) = 155 kg
Velocity (v) = 20 m/s
Plugging the values into the formula:
KE = 1/2 * 155 kg * (20 m/s)^2
KE = 0.5 * 155 kg * 400 m^2/s^2
KE = 31,000 J
Therefore, the kinetic energy of the object is 31,000 J.
The correct option is d. 31,000 J.
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