Nan’s suitcase is on a bench. The suitcase has a mass of 14 kilograms. Nan accidentally knocks the suitcase off the bench, and the suitcase falls at a speed of 2.7 meters per second. How much kinetic energy does the suitcase have just before it hits the floor?
51.03 J
18.9 J
102.06 J
204.12 J
The formula for calculating kinetic energy is KE = 1/2 * m * v^2, where KE is the kinetic energy, m is the mass, and v is the velocity.
Plugging in the given values, we have:
KE = 1/2 * 14 kg * (2.7 m/s)^2
KE = 1/2 * 14 kg * 7.29 m^2/s^2
KE = 102.06 J
Therefore, the suitcase has 102.06 J of kinetic energy just before it hits the floor, so the correct answer is 102.06 J.