A40kg-skier starts at the top of a 12-meter high slope. at the bottom, she is traveling 10 m/s. how much energy does she lose to friction

a. she doesn't lose any because mechanical energy is always conserved

b.4,704 j

c.2,000 j

d.2,704 j

Which of the following correctly describes the early view of catastrophism?

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

You will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. (refer to the walk-through video to locate the online lab within the online textbook).