The first one would be thermal energy
Answer:
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Explanation:
Answer:
1.73 seconds
Explanation:
The velocity the ball first hits the ground with is:
v² = v₀² + 2aΔx
v² = (0 m/s)² + 2 (-10 m/s²) (-20 m)
v = -20 m/s
The velocity it rebounds with is 3/4 of that in the opposite direction, or 15 m/s.
The time it takes to return to the ground is:
Δx = v₀ t + ½ at²
0 = (15 m/s) t + ½ (-10 m/s²) t²
0 = t (15 − 5t²)
t = √3
t ≈ 1.73 seconds
D. Your mass and the mass of the planet
Answer: A 60 g golf ball is dropped from a level of 2 m high. It rebounds to 1.5 m. Energy loss will be 0.29J
Explanation: To find the correct answer, we have to know more about the Gravitational potential energy.
<h3>What is gravitational potential energy?</h3>
- The energy possessed by a body by virtue of its position in gravitational field of earth is called gravitational potential energy.
- The gravitational potential energy of a body at a height h with respect to the height h will be,

- Expression for gravitational potential energy loss will be,

<h3>How to solve the problem?</h3>
- The total energy before the ball dropped will be,

- The total energy after when the ball rebounds to 1.5m will be,

- The total energy loss will be,

Thus, we can conclude that, the energy loss will be,0.294J.
Learn more about the gravitational potential energy here:
brainly.com/question/28044692
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