Question 1

Which of the following best describes the main focus of physics as a science?

Accepted Answer

The study of the general physical principles that apply to the behavior of nature.

Question 2

Which step in the scientific method involves adjusting a theory based on experimental results?

Accepted Answer

Verification

Question 3

Which of the following is the correct SI unit for electric current?

Accepted Answer

Ampère (A)

Question 4

A measurement is recorded as $$0.0023 m. $$How many significant figures does this value have?

Accepted Answer

2

Question 5

Which of the following values is more precise: $$0.0023 m or$$ $$3.25 m$$?

Accepted Answer

$$0.0023 m$$, because it goes to the fourth decimal place.

Question 6

Express $$0.000570 in $$scientific notation.

Accepted Answer

$$5.70 	imes 10$$^{-3}$$

Question 7

When multiplying $$2.34 (3 $$sig figs) by $$1.2 (2 $$sig figs), how many significant figures should the result have?

Accepted Answer

2

Question 8

Which of the following equations correctly defines average velocity?

Accepted Answer

$$v_{ave} = \frac{\Delta x}{\Delta t}$$

Question 9

A car travels $$100 m $$east in $$20 s. $$What is its average velocity?

Accepted Answer

$$5 m/s$

Question 10

Which of the following best describes deceleration?

Accepted Answer

An acceleration directed opposite to the velocity.

Question 11

If a car's velocity changes from $$10 m/s to$$ $$2 m/s in$$ $$4 s$$, what is its average acceleration?

Accepted Answer

$$-2$$ $$m/s^2$

Question 12

Which kinematic equation would you use to solve for displacement when you know initial velocity, acceleration, and time?

Accepted Answer

$$\Delta x = v_0$ t + \frac{1}{2} a t^2$

Question 13

A runner accelerates uniformly from rest to $$8 m/s in$$ $$4 s. $$What is the runner's average acceleration?

Accepted Answer

$$2$$ $$m/s^2$

Question 14

Which of the following is NOT a fundamental SI unit?

Accepted Answer

Newton (N)

Question 15

A ball is thrown straight up with an initial velocity of $$15 m/s. $$Neglecting air resistance, what is its velocity at the highest point?

Accepted Answer

$$0 m/s$

Question 16

Which of the following best describes the difference between distance and displacement?

Accepted Answer

Distance is the total path length; displacement is the straight-line change in position.

Question 17

If a car moves with a constant velocity, what can be said about its acceleration?

Accepted Answer

Acceleration is zero.

Question 18

Which of the following is the correct definition of instantaneous velocity?

Accepted Answer

The velocity at a particular moment in time, found as $$v = \lim_{\Delta t 	o 0} \frac{\Delta x}{\Delta t}.$$

Physics Foundations and Kinematics: Structured Study Notes

Study Guide - Practice Questions