9 1 Point A 2 0 Kg Rock Is Thrown Vertically Upward From A 50 M Cliff With An Initial Velocity Of 6 0 M S And Reaches A 1 (18.11 KiB) Viewed 16 times
9 1 Point A 2 0 Kg Rock Is Thrown Vertically Upward From A 50 M Cliff With An Initial Velocity Of 6 0 M S And Reaches A 2 (10.53 KiB) Viewed 16 times
9 1 point A 2.0 kg rock is thrown vertically upward from a 50 m cliff with an initial velocity of 6.0 m/s and reaches a maximum height of 80 m. Which of the following statements is false? The potential energy of the rock is at its greatest just before it is thrown. The potential energy of the rock at the top is greater than the kinetic at the top. The mechanical energy of the rock at its maximum equals the mechanical energy at the ground level. The kinetic energy of the rock as it reaches the ground is greater than the potential energy at the ground. 10 1 point A baseball has a mass of 2.400 kg and a gravitational potential energy of 235 J. When the baseball falls back to the ground at what speed does it hit the ground? 34.3 m/s 24.2 m/s 17.1 m/s 13.7 m/s
1 point A rock resting at the edge of a cliff is dropped over the edge. Ignoring friction, which of the following statements is false? The mechanical energy of the rock at the top is equal to the mechanical energy at the bottom. The potential energy of the rock (relative to the ground) at the top is greater than the kinetic energy at the top. The potential energy decreases at the same rate as the kinetic energy increases. The potential energy increases as the kinetic energy decreases. ☆
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