waec model questions vol1 2021 physics
Objective • Question 18
Question 18
WAEC_MODEL_QUESTIONS_VOL1
•
2021
A 2.0 kg block is released from rest at the top of a rough inclined plane 10.0 m long that makes an angle of 30° with the horizontal. The coefficient of kinetic friction between the block and the plane is 0.20. At the bottom of the incline the block compresses a horizontal spring of spring constant 500 N m⁻¹ and comes to rest after compressing it by a distance x. Find x (in metres).
Answer Options
Correct Answer
A.
0.51
B.
0.60
C.
0.45
D.
0.73
Correct Answer
A
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