You drop an object and observe that it bounces to only half it's original height. Draw the diagram to show the change in kinetic and potential energy of this object.
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1. You drop an object and observe that it bounces to only half it's original height. Draw the diagram to show the change in kinetic and potential energy of this object.
You must answer no. 1.
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- For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at a constant speed in a time of 1.60 s. For the second time, the athlete completes the same task in 1.50 s. Match the answers with questions. metabolic energy metabolic power A. decreases B. increases C. not enough information D. stays the same1. Which of the following is NOT an example of potential energy? a. A running woman b. An incredibly compressed spring G. A tightly stretched rubber band d. An apple dangling off a branch 2. A ball drops from a height h. What more do we need to calculate initial potential energy? a. Elasticity of the Ball b. Mass c. Final Velocity d. Horizontal DisplacementA 500 kg cart rests atop a hill 30.0 m high on a roller coaster. Its gravitational potential energy is measured relative to the bottom of the hill. The cart then rolls down the hill. Which of these best describes what is happening in this situation? a. the total mechanical energy of the cart is decreasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is increasing b. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is increasing c. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is decreasing d. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is decreasing, and the gravitational potential energy of the cart is increasing e. the total mechanical energy of…
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