10. Students create an Energy vs. Height graph for a rollercoaster that starts at the top of a hill before going down the hill and back up to a hill of equal height. They labeled each curve or line A, B, or C to represent the different type of energy. C B Position Which of the following accurately identifies each line by the type of energy that is represented? A. Curve A represents potential energy, Curve B represents kinetic energy, and Line C represents the total energy in the system. B. Curve A represents the total energy in the system, Curve B represents the potential energy, and Line C represents kinetic energy. C. Curve A represents kinetic energy. Curve B represents potential energy, and Line C represents the total energy in the system. D. Curve A represents the total energy in the system, Curve B represents the kinetic energy, and Line C represents the potential energy. Energy

At its maximum speed, a 4 kg sloth can climb a height of 6 m in 2 minutes. A. What is the primary energy transformation that is taking place? B. What is the force required for the sloth to climb at a constant speed? C. How much work does this sloth do climbing the tree? D. How much does the potential energy increase?

Please explain step by step, thanks.

You lift a box off the ground and then hold it at a height above your waist. Which does not describe the work or energy in this process? A. You did positive work on the box. B. Gravity did negative work on the box C. The box's gravitational potential energy increased. D. The box's kinetic energy remained constant throughout the process.

A 100gram ball thrown vertically downward stricken the ground with a speed of 20m/s. It then bounces, and reaches a final height of 5.0 meters. a.what is the ball's kinetic energy  b. What is the ball's potential energy at the 5.0-m height c. What is the ball's kinetic energy immediately after it rebounds from the surface  d. What is the ball's speed immediately after it rebounds from the surface

A body moves with increasing speed.  Which of the following statements is true? A. The net work done on the body is positive, and the kinetic energy is increasing. B. The net work done on the body is positive, and the kinetic energy is decreasing. C. The net work done on the body is zero, and the kinetic energy is decreasing. D. The net work done on the body is negative, and the kinetic energy is increasing. E. The net work done on the body is negative, and the kinetic energy is decreasing.

A certain force does −7 J of work in moving an object located at position A to position B. The same force then does −7 J of work in moving it back from position B to position A. No other forces did work. Was mechanical energy conserved? Was energy conserved? a. Total energy was conserved but not mechanical energy. b. Mechanical energy was conserved but not total energy. c. Both mechanical energy and total energy were conserved d. Neither mechanical energy nor total energy was conserved.

You lift your backpack from the ground and moved forward to your car. Which of the following statements is true? A. Work is done on the backpack while lifting it and moving it forward. B. Work is done on the backpack while lifting it and but not when moving it forward. C. No work is done on the backpack while lifting it but work is done on it when moving it forward. D. No work is done on the backpack at all.

Choose all the correct statement that applies to Work.   A. Work is the product of force and distance.   B. Work is a vector quantity.   C. Work is a scalar quantity.   D. work has magnitude only.

5. Mark and David are loading identical cement blocks onto David's pickup truck. Mark lifts his block straight up from the ground to the truck, whereas David slides his block up a ramp on massless, frictionless rollers. Which statement is true? A. Mark does more work than David B. Mark and David do the same amount of work C. David does more work than Mark D. None of these statements is neces sarily true because the angle of the incline is unknown E. None of these statements is neces sarily true because the mass of one block is not given 6. A worker pushes a wheelbarrow 5.0 m along a level surface, exerting a constant horizontal force of 50.0 N. If a frictional force of 43 N acts on the wheelbarrow in a direction opposite to that of the worker, what net work is done on the wheelbarrow? A. 250 J B. 215 J C. 35 J D. 15 J E. 45 J 7. An athlete jumping vertically on a trampoline leaves the surface with a velocity of 8.5 m/s upward. What maximum height does she reach?A. 13 m B. 2.3 m C. 3.7…