Neco Model Questions Vol1 2022 Physics Question 38

Practice objective / multiple choice question 38 from the 2022 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2022 Physics Objective / Multiple Choice Medium Difficulty
Question 38 NECO_MODEL_QUESTIONS_VOL1 • 2022 • PHYSICS • objective

A \(3\ \text{kg}\) block is released from rest at the top of a smooth incline that is \(5\ \text{m}\) high. After reaching the bottom, the block slides onto a horizontal rough surface with coefficient of kinetic friction \(\mu_k = 0.20\) and comes to rest after travelling \(2\ \text{m}\). (a) Find the speed of the block at the bottom of the incline. (b) Calculate the work done by friction. (c) Determine the average power dissipated by friction if the block takes \(4\ \text{s}\) to stop.

Answer Options

A. (a) 8.8 m/s, (b) -13.5 J, (c) 3.5 W
B. (a) 10.2 m/s, (b) -9.5 J, (c) 2.4 W
Correct Answer C. (a) 9.9 m/s, (b) -11.8 J, (c) 2.9 W
D. (a) 9.5 m/s, (b) 11.8 J, (c) -2.9 W
Correct Answer
C
Correct Option:
(a) 9.9 m/s, (b) -11.8 J, (c) 2.9 W

About This Question

This is Neco Model Questions Vol1 2022 Physics Question 38. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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