Neco 2022 Physics Question 30

Practice objective / multiple choice question 30 from the 2022 Neco Physics examination.

Neco 2022 Physics Objective / Multiple Choice Medium Difficulty
Question 30 NECO • 2022 • PHYSICS • objective

A 10 kg crate is pulled across a horizontal floor by a constant force of \(50\ \text{N}\) applied at \(30^\circ\) above the horizontal. The coefficient of kinetic friction between the crate and the floor is \(0.25\). The crate starts from rest and moves \(8\ \text{m}\). Determine (a) the net work done on the crate, (b) its speed after moving 8 m, and (c) the average power supplied by the pulling force during this displacement. Give answers to three significant figures.

Answer Options

A. (a) 150 J, (b) 5.48 m\/s, (c) 1.10e2 W
B. (a) 180 J, (b) 6.00 m\/s, (c) 1.25e2 W
Correct Answer C. (a) 200 J, (b) 6.33 m/s, (c) 1.37e2 W
D. (a) 250 J, (b) 7.21 m\/s, (c) 1.60e2 W
Correct Answer
C
Correct Option:
(a) 200 J, (b) 6.33 m/s, (c) 1.37e2 W

About This Question

This is Neco 2022 Physics Question 30. It is one of the objective questions from the 2022 Neco Physics examination.

Difficulty level: Medium .

View More Neco 2022 Physics Questions More Neco Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support