Question 1

A car starts from rest and accelerates uniformly at $2\ \mathrm{m/s^2}$ for $10\ \mathrm{s}$. What is the car's final velocity?

Accepted Answer

$20\ \mathrm{m/s}$

Question 2

A ball is thrown horizontally from the top of a $45\ \mathrm{m}$ high cliff with a speed of $8\ \mathrm{m/s}$. How long does it take to hit the ground? (Neglect air resistance, $g = 9.8\ \mathrm{m/s^2}$)

Accepted Answer

$3.03\ \mathrm{s}$

Question 3

Which of the following is a vector quantity?

Accepted Answer

Displacement

Question 4

A projectile is launched at an angle of $30^\circ$ above the horizontal with an initial speed of $20\ \mathrm{m/s}$. What is the initial vertical component of its velocity?

Accepted Answer

$20 \sin 30^\circ = 10\ \mathrm{m/s}$

Question 5

A cyclist moves in a circle of radius $25\ \mathrm{m}$ at a constant speed of $5\ \mathrm{m/s}$. What is the magnitude of the cyclist's acceleration?

Accepted Answer

$1\ \mathrm{m/s^2}$

Question 6

A rock is dropped from rest from a height $h$. Which equation gives the time $t$ it takes to reach the ground? (Neglect air resistance)

Accepted Answer

$t = \sqrt{\dfrac{2h}{g}}$

Question 7

A runner accelerates from $4\ \mathrm{m/s}$ to $8\ \mathrm{m/s}$ in $2\ \mathrm{s}$. What is the runner's average acceleration?

Accepted Answer

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

Question 8

Which of the following statements about projectile motion is correct?

Accepted Answer

The horizontal velocity remains constant if air resistance is neglected.

Question 9

A vector has components $A_x = 6$ and $A_y = 8$. What is the magnitude of the vector?

Accepted Answer

$10$

Question 10

A car travels $100\ \mathrm{km}$ east and then $60\ \mathrm{km}$ north. What is the magnitude of its displacement?

Accepted Answer

$\sqrt{100^2 + 60^2} = 116\ \mathrm{km}$

Question 11

A ball is thrown straight up with an initial velocity of $15\ \mathrm{m/s}$. What is the maximum height it reaches? (Use $g = 9.8\ \mathrm{m/s^2}$)

Accepted Answer

$11.5\ \mathrm{m}$

Question 12

Which of the following best describes the difference between speed and velocity?

Accepted Answer

Velocity has both magnitude and direction, while speed has only magnitude.

Question 13

A stone is thrown horizontally from a $20\ \mathrm{m}$ high building with a speed of $10\ \mathrm{m/s}$. How far from the base of the building does the stone land? (Use $g = 9.8\ \mathrm{m/s^2}$)

Accepted Answer

$14.3\ \mathrm{m}$

Question 14

A car moves in a circle of radius $50\ \mathrm{m}$ at a constant speed of $20\ \mathrm{m/s}$. What is the period of one revolution?

Accepted Answer

$15.7\ \mathrm{s}$

Question 15

Which of the following is NOT a property of vectors?

Accepted Answer

Vectors can be divided by other vectors.

Question 16

A train moves with a constant acceleration. If its velocity increases from $10\ \mathrm{m/s}$ to $30\ \mathrm{m/s}$ over a distance of $200\ \mathrm{m}$, what is its acceleration?

Accepted Answer

$4.0\ \mathrm{m/s^2}$

Question 17

A ball is thrown at $20\ \mathrm{m/s}$ at an angle of $45^\circ$ above the horizontal. What is the range of the projectile? (Neglect air resistance, $g = 9.8\ \mathrm{m/s^2}$)

Accepted Answer

$40.8\ \mathrm{m}$

Question 18

A student walks $3\ \mathrm{km}$ east, then $4\ \mathrm{km}$ north, and finally $5\ \mathrm{km}$ west. What is the magnitude of the student's displacement from the starting point?

Accepted Answer

$4.47\ \mathrm{km}$

Question 19

Which of the following best describes uniform circular motion?

Accepted Answer

The speed is constant, but the velocity is changing.

Question 20

A car accelerates from rest at $3\ \mathrm{m/s^2}$ for $4\ \mathrm{s}$, then continues at constant speed for $6\ \mathrm{s}$. What is the total distance traveled?

Accepted Answer

$72\ \mathrm{m}$

Physics 5A Midterm 1 Content Guide: Vectors, Kinematics, and Circular Motion

Study Guide - Practice Questions

Study Guide - Flashcards