What is the kinetic energy of a roller coaster car that has a mass of 482kg that is descending feom the highest peak of the coaster which is known to be 75m tall and has a velocity of 37.9 m/s? The gravitational acceleration is 9.81 m/s^2. Must show all work, correct sig figs, and include correct units.

346174.8 joules

Explanation:

Kinetic energy is the energy possessed by a moving object. It is measured in joules.

Kinetic energy = 1/2 x Mass x Velocity^2

Since mass of rollercoaster = 482kg

velocity = 37.9 m/s

Then, K.E = 1/2 x 482kg x (37.9 m/s)^2

= 0.5 x 692349.62

= 346174.81 joules

Thus, the kinetic energy of the descending rollercoaster is 346174.8 joules

c. movement because i took the test and it lets me review my answers

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation: