1.What was the effect on the skater's maximum potential energy when he was placed further down the ramp? Explain why this happened. 2.What was the effect on the skater's maximum kinetic energy when he was placed further down the ramp? Explain why this happened
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1.What was the effect on the skater's maximum potential energy when he was placed further down the ramp? Explain why this happened.
2.What was the effect on the skater's maximum kinetic energy when he was placed further down the ramp? Explain why this happened.
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- You take a 13kg bag of lead pellets and drop it from 2m above the ground.a. How much gravitational potential energy does the bag have when held 2m above the ground?b. The bag is dropped. Just before it hits the ground, how much kinetic energy does it have?c. How fast is the bag moving just before it hits the ground?d. When it hits the ground, the kinetic energy will be transformed mostly into thermal energy. If 40%of this energy goes into the lead pellets as heat, what will be the increase in temperature of thelead? Assume led has a specific heat capacity of 160J/kg·K.Please atleast answer this question1. Calculate the work done on the suitcase by F→. Express your answer with the appropriate units. 2. Calculate the work done on the suitcase by the gravitational force. Express your answer with the appropriate units. 3.Calculate the work done on the suitcase by the normal force. Express your answer with the appropriate units. 4. Calculate the work done on the suitcase by the friction force. Express your answer with the appropriate units. 5. Calculate the total work done on the suitcase. Express your answer with the appropriate units. 6. If the speed of the suitcase is zero at the bottom of the ramp, what is its speed after it has traveled 3.90 mm along the ramp? Express your answer with the appropriate units.
- 2. An object has 560 J of potential energy and 890 J of mechanical energy. How much kinetic energy does the object have?. ME = REHPE 560 560 330J= PE olog ertev 3. A slingshot rubber band with a spring constant of 850 N/m was stretched 0.33 m. A 0.4 kg rock was fired from the slingshot after it was released. a. Find the spring potential energy. PE =)2 kx? Z(850X.33) b. What is the kinetic energy of the stone once it was released? PEERE c. What is the velocity of the stone as soon as the slingshot was released?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.1. An apple hanging from a limb has potential energy because of its height. If it falls, what becomes of this energy just before it hits the ground? a. its total energy goes to zero b. its P.E. is transformed into kinetic energy c. its energy is transformed into the thermal energy of the apple and the ground d. its P.E. increases and just before it hits the ground it is doubled 2. An energy bar contains 105 kilocalories. How much work is the equivalent of this energy bar? a. 25.06 KJoules b. 439.95 kJoules c. 10.5 kJoules d. 0.14 Joules letter only
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