Physics 9.2 Quiz

Speed at a specific moment in time is

• distance

• relative motion

• instantaneous speed

If you want to know an object's speed over the course of the whole journey you would calculate

• average speed

• instantaneous speed

• speed

• velocity

Speed in a given direction is called

• speed

• average speed

• velocity

• instantaneous speed

The slope of a line on a Distance vs. Time graph represents

• distance

• speed

• average speed

• time

On a distance vs. time graph, the steeper the slope of the line, the faster the speed of the object. Circle one: True or False

• True

• False

An elephant walks for 24 km in 2 hours. What is his speed? (5pts) SHOW YOUR WORK

A student walks to school traveling 1.5km in 25 minutes, he stops to take a break and tie his shoe for 2 minutes, then, realizing he was late, he ran 0.5km in 5 minutes. Calculate his average speed on the way to school. (5pts) SHOW YOUR WORK

The distance vs. time graph above shows the motion of a bike rider. How far did the biker ride in 7 minutes? (2pts)

Describe the biker's motion between minute 3 and minute 6. (2pts)

Below is another distance vs. time graph. Compare (using words) the speeds of the object shown by line A and the object shown by line D. Explain how you know. (3pts) YOU DO NOT NEED TO DO MATHY MATH FOR THIS QUESTION!