Question 1

Which of the following best describes the purpose of dimensional analysis in physics problem solving?

Accepted Answer

To convert between different units and check the consistency of equations.

Question 2

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

Accepted Answer

$$10\ \mathrm{m/s}$$

Question 3

Which of the following is NOT a base unit in the SI system?

Accepted Answer

Newton ($$\mathrm{N})$$

Question 4

A vector $$\vec{A}$$ has components $$A_x = 3$$ and $$A_y = 4. $$What is the magnitude of $$\vec{A}$$?

Accepted Answer

$$5$$

Question 5

A block of mass $$m is at $$rest on a frictionless surface. A force $$F is $$applied for time $$t. $$What is the final velocity of the block?

Accepted Answer

$$\frac{F t}{m}$$

Question 6

Which law states that the total energy of an isolated system remains constant?

Accepted Answer

Law of Conservation of Energy

Question 7

A $$2\ \mathrm{kg}$$ object is dropped from a height of $$5\ \mathrm{m}. $$What is its kinetic energy just before hitting the ground? (Assume $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$98\ \mathrm{J}$$

Question 8

Which of the following best describes a periodic motion?

Accepted Answer

A motion that repeats itself at regular intervals.

Question 9

A student measures the length of a table as $$2.0\ \mathrm{m}$$, the width as $$1.0\ \mathrm{m}$$, and the height as $$0.75\ \mathrm{m}. $$What is the volume of the table?

Accepted Answer

$$1.5\ \mathrm{m^3$}$$

Question 10

Which equation represents Newton's Second Law?

Accepted Answer

$$\vec{F} = m \vec{a}$$

Question 11

A $$3\ \mathrm{kg}$$ object moves at $$4\ \mathrm{m/s}. $$What is its momentum?

Accepted Answer

$$12\ \mathrm{kg\cdot m/s}$$

Question 12

Which of the following statements about temperature is correct?

Accepted Answer

Temperature is a measure of the average kinetic energy of the particles in a substance.

Question 13

A $$5\ \mathrm{kg}$$ object is moving at $$2\ \mathrm{m/s}. $$What is its kinetic energy?

Accepted Answer

$$10\ \mathrm{J}$$

Question 14

Which of the following is an example of a real-life application of the laws of thermodynamics?

Accepted Answer

The operation of a refrigerator.

Question 15

A student throws a ball vertically upward with an initial velocity of $$8\ \mathrm{m/s}. $$What is the maximum height reached by the ball? (Assume $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$3.27\ \mathrm{m}$$

Question 16

Which of the following best describes the concept of work in physics?

Accepted Answer

Work is the product of force and displacement in the direction of the force.

Question 17

A $$10\ \mathrm{kg}$$ object is lifted to a height of $$2\ \mathrm{m}. $$What is its potential energy? (Assume $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$196\ \mathrm{J}$$

Question 18

A system undergoes a phase change from liquid to gas. Which law of thermodynamics is most directly involved in this process?

Accepted Answer

The First Law of Thermodynamics

Question 19

A particle moves in a circle of radius $$r$$ with constant speed $$v. $$What is the expression for its centripetal acceleration?

Accepted Answer

$$\frac{v^2$}{r}$$

Question 20

A $$2\ \mathrm{kg}$$ object is moving at $$3\ \mathrm{m/s}$$ and collides with a stationary $$1\ \mathrm{kg}$$ object. If the collision is perfectly elastic, what is the total kinetic energy after the collision?

Accepted Answer

$$9\ \mathrm{J}$$

PHY1025 Syllabus and Course Structure – Physics with Calculus

Guida di studio - Domande di pratica

Study guide - Flashcard