Edgar and his cousin are driving bumper cars at an amusement park. When his cousin gets stuck in a corner, Edgar drives his car into his cousin’s car. The combined mass of Edgar and his bumper car is 268 kilograms. Edgar is traveling at 2.2 meters per second. How much kinetic energy does Edgar have when he hits his cousin’s car?
KE=12mv2
(1 point)
Responses
2,594.24 J
2,594.24 J
294.8 J
294.8 J
1,297.12 J
1,297.12 J
648.56 J
3 answers
2,594.24 J
wrong
Sorry, let's try the calculation again:
KE = 1/2 * m * v^2
KE = 1/2 * 268 kg * (2.2 m/s)^2
KE = 1/2 * 268 kg * 4.84 m^2/s^2
KE = 1/2 * 1295.52 J
KE = 647.76 J
Therefore, Edgar has 647.76 J of kinetic energy when he hits his cousin's car.
KE = 1/2 * m * v^2
KE = 1/2 * 268 kg * (2.2 m/s)^2
KE = 1/2 * 268 kg * 4.84 m^2/s^2
KE = 1/2 * 1295.52 J
KE = 647.76 J
Therefore, Edgar has 647.76 J of kinetic energy when he hits his cousin's car.
1 answer