Starting from rest and moving in a straight line, a runner achieves a velocity of $7 \mathrm{~m} / \mathrm{s}$ in a time of $2 \mathrm{~s}$. What is the average acceleration of the runner?

A hiker starts at his campsite and walks at 2 m/s northward for 30 min, then turns and walks due west at 1 m/s for 1 h. (a) Calculate the distance the hiker walks in 1.5 h. (b) Calculate the hiker's displacement from the campsite after walking for 1.5 h. (c) Explain the difference between distance and displacement.

A woman walks a distance of $240 \mathrm{~m}$ with an average speed of $1.2 \mathrm{~m} / \mathrm{s}$. What time was required to walk this distance?

A person in a hurry averages $62 \mathrm{MPH}$ on a trip covering a distance of 300 miles. What time was required to travel that distance?

A driver travels at an average speed of $68 \mathrm{MPH}$ for  $2.5$ hours. How far does she travel throughout this period?

A driver drives for 2.5 hours at an average speed of $54 \mathrm{MPH}$. What distance does she travel in this time?

A traveler covers a distance of 460 miles in a time of 8 hours. What is the average speed for this trip?A traveler covers a distance of 460 miles in a time of 8 hours. What is the average speed for this trip?

A car starts from rest, accelerates uniformly for 5 seconds, travels at constant velocity for 5 seconds, and finally decelerates uniformly for 5 seconds. Sketch graphs of velocity versus time and acceleration versus time for this situation.

A hiker moves forward at an average speed of $1.3 \mathrm{~m} / \mathrm{s}$. How many kilometres has the hiker covered after spending $1.5$ hours moving at this speed?

When a lawn is mowed two weeks (14 days) after the prior mowing, it is discovered that grass cuttings have an average length of $5.2 \mathrm{~cm}$. What is the typical growth rate of this grass, measured in mathrm cm per day?

Nite an algebraic equation for each function.

Gina walks 2 kilometers from home to a park. She then jogs at an average speed of 7 kilometers per hour. The total distance she traveled, $d$ kilometers, is a function of the time she takes to jog, $t$ hours.

For the car whose velocity is plotted in question 21 , in which of the equal time segments 0-2 seconds, 2-4 seconds, or 4-6 seconds, is the distance traveled by the car the greatest? Explain.

A walker completes a  $2.4 \mathrm{~km}$ route in 30 minutes. What is the walker's average speed in  $\mathrm{km} / \mathrm{h}$ for this distance?

Is the instantaneous velocity at point A greater or less than that at point B? Explain.