Q: A car travels 60 miles per hour for 2 hours. What is the total distance traveled in meters? (1 mile = 1,609 meters)

$$60 \times 2 \times 1,609 = 193,080$$ meters

Q: A force of $$10\,\text{N}$$ acts at an angle of $$30^\circ to $$the horizontal. What is the horizontal component of the force?

$$10 \times \cos(30^\circ) = 8.66\,\text{N}$$

Q: A student measures the time for a pendulum to swing and records the following times: 2.1 s, 2.2 s, 2.0 s, 2.3 s. What is the average time?

$$\frac{2.1 + 2.2 + 2.0 + 2.3}{4} = 2.15\,\text{s}$$

Q: A 5 kg object is acted upon by a net force of 20 N. What is its acceleration?

$$a = \frac{F}{m} = \frac{20}{5} = 4\,\text{m/s}^2$$

Q: A box is pushed across a floor with a force of 50 N. The coefficient of kinetic friction is 0.2. If the box has a mass of 10 kg, what is the frictional force?

$$f_k = \mu_k m g = 0.2 \times 10 \times 9.8 = 19.6\,\text{N}$$

Q: A student records the following data for the time it takes a ball to roll down a ramp: 1.5 s, 1.7 s, 1.6 s, 1.8 s. What is the correct way to graph this data?

Plot time on the y-axis with units of seconds ($$\text{s}$$), and trial number on the x-axis.

Q: A student uses an online lab tool to measure the distance a cart travels in 3 seconds. If the cart moves at a constant speed of 2 m/s, what is the measured distance?

$$d = v \times t = 2 \times 3 = 6\,\text{m}$$

Question 1

A car travels 60 miles per hour for 2 hours. What is the total distance traveled in meters? (1 mile = 1,609 meters)

Accepted Answer

$$60 	imes 2 	imes 1,609 = 193,080$$ meters

Question 2

Which of the following quantities is a vector?

Accepted Answer

Velocity

Question 3

A force of $$10\,	ext{N}$$ acts at an angle of $$30^\circ to $$the horizontal. What is the horizontal component of the force?

Accepted Answer

$$10 	imes \cos(30^\circ) = 8.66\,	ext{N}$$

Question 4

A student measures the time for a pendulum to swing and records the following times: 2.1 s, 2.2 s, 2.0 s, 2.3 s. What is the average time?

Accepted Answer

$$\frac{2.1 + 2.2 + 2.0 + 2.3}{4} = 2.15\,	ext{s}$$

Question 5

A block is at rest on a horizontal surface. Which statement best describes the forces acting on it?

Accepted Answer

The net force is zero; normal force equals weight.

Question 6

A student creates a graph of position vs. time for a moving object. What does the slope of the graph represent?

Accepted Answer

Velocity

Question 7

A 5 kg object is acted upon by a net force of 20 N. What is its acceleration?

Accepted Answer

$$a = \frac{F}{m} = \frac{20}{5} = 4\,	ext{m/s}^2$$

Question 8

Which of the following is NOT a scalar quantity?

Accepted Answer

Displacement

Question 9

A team measures the angle of a ramp as $$25^\circ$$ using a protractor. Which unit should be used to record this measurement in a scientific table?

Accepted Answer

Degrees ($$^\circ)$$

Question 10

A graph of velocity vs. time for a car shows a straight line with a positive slope. What does this indicate about the car's motion?

Accepted Answer

The car is accelerating at a constant rate.

Question 11

A box is pushed across a floor with a force of 50 N. The coefficient of kinetic friction is 0.2. If the box has a mass of 10 kg, what is the frictional force?

Accepted Answer

$$f_k = \mu_k m g = 0.2 	imes 10 	imes 9.8 = 19.6\,	ext{N}$$

Question 12

Which of the following best describes translational equilibrium?

Accepted Answer

The sum of all forces acting on an object is zero.

Question 13

A student records the following data for the time it takes a ball to roll down a ramp: 1.5 s, 1.7 s, 1.6 s, 1.8 s. What is the correct way to graph this data?

Accepted Answer

Plot time on the y-axis with units of seconds ($$	ext{s}$$), and trial number on the x-axis.

Question 14

A student uses an online lab tool to measure the distance a cart travels in 3 seconds. If the cart moves at a constant speed of 2 m/s, what is the measured distance?

Accepted Answer

$$d = v 	imes t = 2 	imes 3 = 6\,	ext{m}$$

Question 15

Which of the following is an example of a real-life application of Newton's Third Law?

Accepted Answer

A swimmer pushes water backward and moves forward.

Question 16

A team of students discusses their answers to a physics problem and finds different results. What is the best next step?

Accepted Answer

Compare and contrast their answers and use discussion to confirm or deny solutions.

Question 17

A student needs to convert 5 feet to meters. (1 foot = 0.3048 meters) What is the correct conversion?

Accepted Answer

$$5 	imes 0.3048 = 1.524\,	ext{m}$$

Question 18

A graph of acceleration vs. time for a moving object is a horizontal line at $$2\,	ext{m/s}^2. $$What does this indicate?

Accepted Answer

The object is accelerating at a constant rate.

Question 19

A student calculates the resultant of two vectors: $$\vec{A} = 3\,	ext{m}$$ east and $$\vec{B} = 4\,	ext{m}$$ north. What is the magnitude of the resultant vector?

Accepted Answer

$$\sqrt{3^2$ + 4^2$} = 5\,	ext{m}$$

Module 1: Measurement, Units, Vectors, and Newton's Laws

Study Guide - Practice Questions

Study Guide - Flashcards