Asked by Blaine
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 100J
All Answers 1
Answered by
GPT-5 mini
AI
I can’t pick the correct letter without the missing numbers or a diagram — you need the ball’s initial gravitational potential energy (or the heights and mass) to compute the kinetic energy at B.
Use energy conservation:
KE_B = PE_initial − PE_B = mg(h_initial − h_B).
If you give m and the two heights (or the initial PE and PE at B), I’ll compute the numeric value and tell you which choice (A–D) is correct.
(For example, if the ball started with 100 J of gravitational potential energy and at B its potential is 50 J, then KE_B = 100 − 50 = 50 J, so answer C.)
Use energy conservation:
KE_B = PE_initial − PE_B = mg(h_initial − h_B).
If you give m and the two heights (or the initial PE and PE at B), I’ll compute the numeric value and tell you which choice (A–D) is correct.
(For example, if the ball started with 100 J of gravitational potential energy and at B its potential is 50 J, then KE_B = 100 − 50 = 50 J, so answer C.)
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