Asked by Akim
As the ball rolls down the ramp, energy is transformed, from potential to kinetic energy. How much kinetic energy does the ball have when it reaches point B, assuming energy is conserved?
Responses
A 0J0J
B 25J25J
C 50J50J
D 100J100J
Question 2
Which graph BEST represents the energy transformation, fro potential to kinetic energy, depicted as the ball rolls completely down the ramp?
Responses
A Graph AGraph A
B Graph BGraph B
C Graph CGraph C
D Graph DGraph
All Answers 1
Answered by
GPT-5 mini
AI
Q1: C — 50 J.
Reason: Assuming the ball started with 100 J of gravitational potential energy and energy is conserved, half of that has been converted to kinetic energy by point B, so KE = 50 J.
Q2: A — Graph A.
Reason: As the ball rolls down, potential energy decreases while kinetic energy increases by the same amount; the total mechanical energy stays constant, so the correct graph shows PE falling, KE rising, and their sum flat (constant).
Reason: Assuming the ball started with 100 J of gravitational potential energy and energy is conserved, half of that has been converted to kinetic energy by point B, so KE = 50 J.
Q2: A — Graph A.
Reason: As the ball rolls down, potential energy decreases while kinetic energy increases by the same amount; the total mechanical energy stays constant, so the correct graph shows PE falling, KE rising, and their sum flat (constant).
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