Question 8 A2 kg object is released from rest from a height of 3 m above Earth's surface. How much kinetic energy does the object have when it reaches a height of 1 m? 2.5J 10 J C 20 J 30 J E 40 J
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- A 2.5 kg bowling ball is tied to a 1m long string attached to the ceiling. The ceiling is 5 m above the floor. What is its change in potential energy relative to the floor? 31.3 J O 122.5 J 98.0 J O 24.5 JX Problem 1. An NFL punter punts a 0.02 kg football 100 meters into the air. A. What is the initial potential energy of the ball when it's at its peak? 0.02 x 9.8 x 100 = 19.6 j What is its final kinetic energy before it hits the ground? 1 o add speaker notes B. C. What is the velocity of the ball before it hits the ground? در نگاه U EVAIf an object of mass 2.00 kg is dropped from rest into free fall from some height where it has +5.00 Joules of gravitational potential energy, then what kinetic energy will it have when its height is zero? a. 5.00 J b. 4.00 J c. 10.0 J d. 2.00 J e. zero J
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