2. 1D Motion / Kinematics

Suppose an object moves along a straight line in four separate trials, each lasting the same amount of time. The displacements for the trials are as follows: Trial 1: $10m$ east, Trial 2: $15m$ west, Trial 3: $8m$ east, Trial 4: $12m$ west. During which trial is the magnitude of the average velocity the largest?

A brick is dropped from rest from a height of $20m$. Ignoring air resistance, what is the average velocity of the brick during its fall until it hits the ground?

A car travels a distance of $400 m$ in $20 s$. What is its average velocity during this time interval?

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

Which of the following units are commonly used to measure both velocity and speed? Select the correct option.

Which of the following is an example of speed rather than velocity?

In the context of one-dimensional motion, is it possible for the $\mathrm{average velocity}$ of an object to be negative over a given time interval?

Which of the following best describes a $velocity$ (as opposed to a $speed$)?

A train is traveling at $55 \text{miles per hour}$ and begins to brake to a stop. If the average deceleration is constant at $0.5 m/s^2$, approximately how long does it take for the train to come to a complete stop?

What is the average velocity of a basketball if it travels a distance of $4$ meters in $5$ seconds?

Which two measurements are required to calculate the average speed of an object?

If your car is traveling at a constant speed of $55 \mathrm{mph}$ for $2 \mathrm{hours}$, what is the average velocity of the car during this time interval?

A baseball moves a distance of $30$ meters and is caught $2$ seconds later. What is the average velocity of the ball?

Which of the following quantities can be used to measure an object's average velocity?

If the average velocity of an object is positive over a time interval, which of the following must be true about its displacement during that interval?