Igcse Model Questions Vol1 2021 Physics Question 36

Practice objective / multiple choice question 36 from the 2021 Igcse Model Questions Vol1 Physics examination.

Igcse Model Questions Vol1 2021 Physics Objective / Multiple Choice Medium Difficulty
Question 36 IGCSE_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • objective

A block of mass \(5.0\ \text{kg}\) rests at the top of an incline that is \(30^{\circ}\) to the horizontal and \(2.0\ \text{m}\) high. The coefficient of kinetic friction between the block and the incline is \(0.20\). The block is released from rest and slides down the incline, reaching the bottom in \(3.0\ \text{s}\). (a) Calculate the speed of the block when it reaches the bottom. (b) Determine the average power delivered by the net force acting on the block during its descent.

Answer Options

A. Speed = 4.2 m/s; Average power ≈ 18 W
Correct Answer B. Speed = 5.1 m/s; Average power ≈ 21 W
C. Speed = 5.1 m/s; Average power ≈ 30 W
D. Speed = 5.8 m/s; Average power ≈ 24 W
Correct Answer
B
Correct Option:
Speed = 5.1 m/s; Average power ≈ 21 W

About This Question

This is Igcse Model Questions Vol1 2021 Physics Question 36. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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