Q: A ball is thrown vertically upward with an initial velocity of $$20\ \mathrm{m/s}. $$Neglecting air resistance, what is the maximum height reached by the ball? (Take $$g = 9.8\ \mathrm{m/s^2$})$$

$$h = \frac{v_0$^2}{2g}$$, so $$h = \frac{(20)^2$}{2 \times 9.8} = 20.4\ \mathrm{m}$$

Q: A car accelerates from rest at $$3\ \mathrm{m/s^2$}$$ for $$5$$ seconds. What is the final velocity?

$$v = at = 3 \times 5 = 15\ \mathrm{m/s}$$

Question 1

Which of the following best describes the main purpose of the Engineering Physics 1A (PHYE0A1) module at the University of Johannesburg?

Accepted Answer

To gain a broad understanding of Mechanics, Waves, and Thermodynamics, and apply these concepts to related disciplines.

Question 2

A student is calculating the velocity of an object moving in a straight line. Which equation should they use if the object starts from rest and accelerates uniformly?

Accepted Answer

$$v = v_0$ + at$$

Question 3

Which of the following is NOT a valid reason for missing an assessment according to the University of Johannesburg's deferred assessment policy?

Accepted Answer

Elective appointment with a healthcare provider that could have been scheduled at another time.

Question 4

A ball is thrown vertically upward with an initial velocity of $$20\ \mathrm{m/s}. $$Neglecting air resistance, what is the maximum height reached by the ball? (Take $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$h = \frac{v_0$^2}{2g}$$, so $$h = \frac{(20)^2$}{2 	imes 9.8} = 20.4\ \mathrm{m}$$

Question 5

Which of the following best describes the concept of dimensional analysis?

Accepted Answer

A technique to check the consistency of equations by comparing the dimensions on both sides.

Question 6

A car accelerates from rest at $$3\ \mathrm{m/s^2$}$$ for $$5$$ seconds. What is the final velocity?

Accepted Answer

$$v = at = 3 	imes 5 = 15\ \mathrm{m/s}$$

Question 7

Which of the following is a requirement for admission to the Engineering Physics 1A examination?

Accepted Answer

A minimum of 40% for the Theory Mark and 50% for the Practical Mark.

Question 8

Which equation correctly expresses Newton's Second Law of Motion?

Accepted Answer

$$F = ma$$

Question 9

A student misses a tutorial test due to illness. What must they do to apply for a deferred assessment?

Accepted Answer

Submit a medical certificate from a registered practitioner and the application form within 7 days.

Question 10

Which of the following is the correct formula for the kinetic energy of an object of mass $$m$$ moving at velocity $$v$$?

Accepted Answer

$$KE = \frac{1}{2}mv^2$

Question 11

A block slides down a frictionless incline of height $$h. $$What is its speed at the bottom?

Accepted Answer

$$v = \sqrt{2gh}$$

Question 12

Which of the following statements about the assessment policy for PHYE0A1 is correct?

Accepted Answer

The best two out of three semester tests count towards the Theory mark.

Question 13

Which of the following is the correct expression for the ideal gas law?

Accepted Answer

$$PV = nRT$$

Question 14

A wave travels with speed $$v$$, frequency $$f$$, and wavelength $$\lambda. $$Which equation relates these quantities?

Accepted Answer

$$v = f\lambda$$

Question 15

A student is late for a semester test by 35 minutes. According to the rules, what happens?

Accepted Answer

The student is not admitted to the venue and cannot write the assessment.

Question 16

Which of the following is a central theme in the study of physics, as emphasized in the course?

Accepted Answer

Problem identification, problem solving, and scientific interpretation of results.

Question 17

A mass attached to a spring oscillates with a period $$T. $$Which equation gives the period for a mass-spring system?

Accepted Answer

$$T = 2\pi \sqrt{\frac{m}{k}}$$

Question 18

Which of the following is the correct formula for the work done by a constant force $$F$$ acting over a displacement $$d at an $$angle $$	heta to $$the direction of the force?

Accepted Answer

$$W = Fd\cos	heta$$

Question 19

A gas undergoes an isothermal expansion at temperature $$T. $$Which law applies and what remains constant?

Accepted Answer

Boyle's Law applies: $$PV = 	ext{constant}$$

Question 20

Which of the following best describes the recommended approach to studying physics in this course?

Accepted Answer

Engage with the material through problem-solving and discussion, not just memorization.

Engineering Physics 1A Study Guide: Syllabus, Structure, and Academic Procedures

Guida di studio - Domande di pratica

Study guide - Flashcard