Question 1

A car moves along a straight road with a constant velocity of $20\ \mathrm{m/s}$ for $10\ \mathrm{s}$, then accelerates uniformly to $40\ \mathrm{m/s}$ over the next $5\ \mathrm{s}$. What is the total displacement of the car during the $15\ \mathrm{s}$ interval?

Accepted Answer

$350\ \mathrm{m}$

Question 2

Which of the following statements best describes a vector quantity?

Accepted Answer

A quantity that has both magnitude and direction.

Question 3

A ball is thrown vertically upward with an initial velocity of $15\ \mathrm{m/s}$. Neglecting air resistance, what is the velocity of the ball when it returns to its original position?

Accepted Answer

$-15\ \mathrm{m/s}$

Question 4

Which kinematic equation would you use to solve for displacement when initial velocity, acceleration, and time are known, but final velocity is not?

Accepted Answer

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

Question 5

On a position vs. time graph, what does the slope of the graph represent?

Accepted Answer

Velocity

Question 6

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

Accepted Answer

$10\ \mathrm{m/s}$

Question 7

Which of the following is a scalar quantity?

Accepted Answer

Distance

Question 8

A cyclist travels $100\ \mathrm{m}$ north, then $100\ \mathrm{m}$ east. What is the magnitude of the cyclist's displacement?

Accepted Answer

$141\ \mathrm{m}$

Question 9

If a car's velocity changes from $30\ \mathrm{m/s}$ to $10\ \mathrm{m/s}$ in $4\ \mathrm{s}$, what is its average acceleration?

Accepted Answer

$-5\ \mathrm{m/s^2}$

Question 10

Which of the following best describes the particle model in physics?

Accepted Answer

It simplifies an object as a single point, ignoring its size and internal motion.

Question 11

A rock is dropped from a cliff and falls freely under gravity. Which kinematic equation would you use to find the time it takes to hit the ground if the height is known?

Accepted Answer

$y = v_0 t + \frac{1}{2} g t^2$

Question 12

Which of the following is NOT a correct use of significant figures?

Accepted Answer

Reporting the answer with more significant figures than the input values.

Question 13

A car travels at $25\ \mathrm{m/s}$ for $8\ \mathrm{s}$, then slows down uniformly to $5\ \mathrm{m/s}$ in $3\ \mathrm{s}$. What is the car's acceleration during the slowing down phase?

Accepted Answer

$-6.67\ \mathrm{m/s^2}$

Question 14

Which statement about acceleration is correct?

Accepted Answer

Acceleration can be in the opposite direction to velocity.

Question 15

A student converts $120\ \mathrm{cm}$ to meters. What is the correct value in SI units?

Accepted Answer

$1.20\ \mathrm{m}$

Question 16

A position vs. time graph for a moving object is a straight line with a negative slope. What does this indicate about the object's motion?

Accepted Answer

The object is moving at a constant negative velocity.

Question 17

A ball is thrown downward with an initial velocity of $5\ \mathrm{m/s}$ from a height of $20\ \mathrm{m}$. What is its velocity just before hitting the ground? (Assume $g = 9.8\ \mathrm{m/s^2}$)

Accepted Answer

$20.0\ \mathrm{m/s}$

Question 18

Which of the following is the correct SI unit for acceleration?

Accepted Answer

$\mathrm{m/s^2}$

Question 19

A car starts from rest and accelerates at $3\ \mathrm{m/s^2}$ for $6\ \mathrm{s}$. What is the total distance traveled?

Accepted Answer

$54\ \mathrm{m}$

Question 20

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

Accepted Answer

Distance is the total length traveled; displacement is the change in position.

Q1 Final Study Guide CH1-2

Study Guide - Practice Questions

Study Guide - Flashcards