2. 1D Motion / Kinematics

Corey Kluber throws a fastball at $93$ miles per hour. What is the speed of his fastball in feet per second?

Which of the following best describes the difference between $v\_\mathrm{avg}$ (average speed) and $v\_\mathrm{inst}$ (instantaneous speed)?

Mikael runs with a constant speed of $3m/s$ for $45s$. How far does Mikael run?

An object's average speed is found by dividing the total distance the object travels by the total $t$ what?

What is the average velocity of a cheetah that ran $100$ meters in $5.95$ seconds?

Which formula can be used to calculate the average speed $v$ for steady motions?

A runner completes a $5$-mile race in $10$ minutes. What was her average speed?

Which of the following gives the correct formula for calculating speed?

Beginning from a signpost, you run 60m to the right, then 60m back. The entire trip takes 24 seconds. What is your speed and velocity for the whole trip?

You walk to the right at 3m/s for 8s, then turn around and walk backwards at 2m/s for some unknown time. You end up 16m to the right from where you started. How long did you walk backwards?

If you are driving 85 km/h along a straight road and you look to the side for 2.0 s, how far do you travel during this inattentive period?

You normally drive on the freeway between San Diego and Los Angeles at an average speed of $105$ km/h ($65$ mi/h), and the trip takes $1$ h and $50$ min. On a Friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only $70$ km/h ($43$ mi/h). How much longer does the trip take?

A car is stopped at a traffic light. It then travels along a straight road such that its distance from the light is given by $x\left(t\right)=b{t}^2-c{t}^3$, where $b=2.40$ m/s² and $c=0.120$ m/s³. Calculate the average velocity of the car for the time interval $t=0$ to $t=10.0$ s.

In an experiment, a shearwater (a seabird) was taken from its nest, flown $5150$ km away, and released. The bird found its way back to its nest $13.5$ days after release. If we place the origin at the nest and extend the $+x$–axis to the release point, what was the bird's average velocity in m/s for the return flight?