Waec Model Questions Vol1 2019 Physics Question 33

Practice objective / multiple choice question 33 from the 2019 Waec Model Questions Vol1 Physics examination.

Waec Model Questions Vol1 2019 Physics Objective / Multiple Choice Medium Difficulty
Question 33 WAEC_MODEL_QUESTIONS_VOL1 • 2019 • PHYSICS • objective

A 5.0‑kg block is pulled up a 30° rough incline of length 10.0 m by a constant horizontal force of 40 N. The coefficient of kinetic friction between the block and the plane is 0.20. The block starts from rest at the bottom. (a) Find the speed of the block when it reaches the top of the incline. (b) Determine the instantaneous power supplied by the horizontal pulling force at that instant. Give the power in watts.

Answer Options

A. v ≈ 3.1 m·s⁻¹; P ≈ 7.2×10¹ W
B. v ≈ 4.0 m·s⁻¹; P ≈ 5.5×10¹ W
C. v ≈ 2.0 m·s⁻¹; P ≈ 1.1×10² W
Correct Answer D. v ≈ 2.6 m·s⁻¹; P ≈ 8.9×10¹ W
Correct Answer
D
Correct Option:
v ≈ 2.6 m·s⁻¹; P ≈ 8.9×10¹ W

About This Question

This is Waec Model Questions Vol1 2019 Physics Question 33. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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