A 60-kg skier starts at the top of a 10-meter high slope. At the bottom, she is traveling 10 m/s. How much energy does she lose to friction?

5,880 J

2,880 J

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

3,000 J

During a baseball game, a player hits a a ball with a speed of 43m/s at an angle of 25∘ above the horizontal. When the player hit the ball, it was 1m above the ground, and after the hit, the ball flies straight toward the center field fence.

Which best describes how temperature, humidity, and pressure vary within an air mass? Temperature and humidity vary, but pressure does not. Temperature, humidity, and pressure are basically the same all through an air mass.

The velocity of an object is v (t) = 27 - t2, 0 ≤ t ≤ 6 where v is measured in meters per second and t is the time in seconds. a. Find the velocity v (2) and acceleration a (2) of the object when t = 2. b.

Can you fall in love with blue eyes and not fall in love with the person who has it?

How many octants are in the three-dimensional coordinate system?

Arrange the steps of energy production in the correct order. Tiles consumption of food cellular respiration in mitochondria breakdown of starch into glucose absorption of glucose molecules creation of ATP

Hundreds of millions of years ago, all the continents on Earth were connected to form a giant "supercontinent" called Pangaea. How might ocean currents have differed during the time of Pangaea compared to today? Explain your answer.

You have a ruler that is marked to the nearest half centimeter. Which of these measurements is written with the correct amount of precision? A) 2.0cm B) 3.14cm C) 5 cm D) 100cm

What kind of information can you gather from a stars spectrum

Gamma rays are waves of energy that have no charge. a. True b. False