2. 1D Motion / Kinematics

Which statement best describes the difference between $v̄$ (average velocity) and $v$ (instantaneous velocity)?

Which of the following best describes the difference between instantaneous velocity and average velocity?

If a car travels a displacement of $120 m$ to the east in $10 s$, what is the car's average velocity?

An object moves with a constant average velocity of $4.5m/s$. How much time does it take to travel a distance of $65m$?

Which of the following best describes how to calculate the average acceleration of an object?

Which of the following is a unit of speed?

A plate moves $200m$ in $10s$. What is its average velocity?

What is the average velocity of an object that travels $42$ meters in $6$ seconds?

Which of the following best describes the difference between instantaneous speed and average speed?

An object moves in a straight line from position $x=2$ meters to $x=10$ meters in $4$ seconds. What is the average velocity of the object?

A ball is rolling at a speed of $0.25\frac{m}{s}$. What is its speed in miles per hour ($mph$)?

When you look at a car's speedometer while driving, does it display the average speed $v=\frac{d}{t}$ or the instantaneous speed $v=\frac{dx}{dt}$? What is the reason for your answer?

If you are traveling at $35\text{ mph}$ and then slow down to $15\text{ mph}$ over a distance of $0.5\text{ miles}$ as you enter a school zone, what is your average velocity during this interval?

A car travels a distance of $150km$ in $7200s$ at constant speed. What is the speed of the car in $m/s$?

Which of the following best defines $v̅$ (average velocity)?