waec model questions vol1 2019 physics
Objective • Question 18
Question 18
WAEC_MODEL_QUESTIONS_VOL1
•
2019
A 5.0 kg block slides down a rough inclined plane that is 8.0 m long and makes an angle of 30° with the horizontal. The block starts from rest at the top and reaches the bottom with a speed of 4.0 m s⁻¹. Assuming the only non‑conservative force is kinetic friction, determine the coefficient of kinetic friction (μ_k) between the block and the plane (give your answer to two decimal places).
Answer Options
Correct Answer
A.
0.46
B.
0.62
C.
0.36
D.
0.56
Correct Answer
A
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