Linear Motion
Draw the Graph
Graphs Graphs Graphs
Free Fallin
Misc
100

You are walking and travel 75 meters in 25 seconds. What is your average walking speed?

3 m/s

100

Draw a position vs time graph at rest

horizontal line on graph 

100

What does the slope of a velocity vs time graph give you?

acceleration!

100

What is g and what is its value? 

acceleration due to gravity! 9.8 m/s^2 (10 is ok) 

100

Why do we say that velocity is a "vector" quantity and speed is a "scalar" quantity?

velocity depends on the magnitude (how fast) and the direction making it a vector. Speed is only "how fast" so it is a scalar

200

What is the average speed you are traveling if you go 15m in 3 sec?

5 m/s

200

Draw a position vs time graph of an object moving in the positive direction while speeding up 

positive slope that is increasing

200

What does the slope of a position vs time graph give you?

velocity!

200

If an object is thrown upwards, how much speed does it lose each second? Ignoring air resistance.

10 m/s for each second 

200

Can you maintain constant speed while rounding a corner? What about constant velocity? Defend your answer

Speed: yes. direction does not matter with speed

Velocity: no. constant velocity is maintaining constant speed and direction

300

What is the distance you travel if you have an average speed of 50 m/s and are walking for 4 sec? 

200 m 

300

Draw a velocity vs time graph where the velocity is positive and the acceleration is negative

line with negative slope above the x axis 

300

How do you calculate the displacement of an object in a velocity vs time graph 

calculate the area under the curve

300

If an object is falling, how fast is it going at 2 seconds? What about 4 seconds? 

2 sec: 20 m/s

4 sec: 40 m/s

300

How do you calculate the average velocity of an object? 

vf + vi / 2

(take the average of the two velocities) 

400

If you walk 0.8 m at an average speed of .04 m/s , how long were you traveling for? 

20 sec

400

Draw a velocity vs time graph where the velocity is negative and the acceleration is positive 

line that is below the x axis with a positive slope 

400

How do you tell an object changed direction when looking at a velocity vs time graph? 

When it crosses the x-axis 

400

Why do we have to double the time calculated in the hang time activity to truly calculate your hang time?

Your calculation gave the time for just the way up, but you double it because you also come back down

400

Explain the difference between distance and displacement. Which is a scalar quantity and which is a vector quantity? 

distance is just how far (scalar) and displacement is relative to the starting position (distance and direction) 

500

What is the acceleration of a bike moving in a straight path that increases its speed from 0 to 30 m/s in 12 sec? 

2.5 m/s^2

500

Draw a velocity vs time graph that is maintaining constant positive velocity 

horizontal line above the x axis 

500

What is the acceleration of an object given these two data points from a velocity vs time graph: 

initial: (5,10)     final:  (10,0) 

-2 m/s^2

500

A lizard falls off a fence, and hits the ground in 1.25 seconds. 

1. What is his velocity when he hits the ground?

2. What is the average velocity of  his fall?

3. How tall is the fence? 

1. 12.25 m/s

2. 6.125 m/s

3. 7.8125 m

500

rearrange the equation: d=1/2gt^2 to solve for t. Show your work 

t= sqrt(2*d / g) 

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