Speed, Velocity and Acceleration

Stupendous Speed

100

What is the formula for speed?

Speed = Distance / Time

200

How is speed different from velocity?

velocity needs a direction

300

What is the average speed of a cow that walks east 60 meters in 90 seconds? (Remember, the units must be m/s or km/hr)

.7 m/s

400

A porcupine moved toward a pond at a speed of 5 m/s. It took him 8 seconds. What was the distance he traveled?

40 meters

500

What is the speed of an object moving east for 6 seconds at 105.3 m/s?

105.3 m/s

Very Cool Velocity

100

What is the formula for velocity?

Velocity = Distance / Time with a direction

200

What is the velocity of an object that is moving 6 meters in 2 seconds east?

3 m/s east

300

Distance = 20 meters Time = 4 minutes Direction = south What is the velocity of this object?

5 m/min south

400

An object travels 25 meters in 2 seconds east. What is it's velocity?

12.5 m/s east (must include direction!)

500

A pink alien moved south in it's spacecraft 2 km at a rate of 20 km/s. How much time did it take him to do this in seconds?

10s

A+ Acceleration

100

What is the formula for acceleration?

Acceleration = Final Velocity - Initial Velocity / change in time with a direction

200

What are three ways we can tell if something is accelerating?

speeding up slowing down changing direction

300

Final Velocity = 50 m/s south Initial Velocity = 60 m/s south Time to change velocity = 5 seconds What is the acceleration of this object?

-2 m/s squared, south

400

How would you describe negative acceleration? You must use the word "velocity".

decrease in velocity over time

500

How would you describe the acceleration of this object? - 14 m/s squared, east

negative acceleration, decrease in 14 m/s every second

What formula would this go to?

100

What formula is m/s an example unit?

speed or average speed

200

What is km/hr squared, south.. a possible unit for?

Acceleration

300

Which of our formulas must have a direction in order to be complete?

velocity

400

For what formula would decimeters/hour east be a possible unit?

velocity

500

What formula would we use if we wanted to find out how an object's velocity changed within a certain period of time?

What is Acceleration

Chemistry

100

Atomic numbers of an atom are the same as the number of what subatomic particle?

Protons

200

How many atoms are in the compound represented by the formula C₁₂H₂₂O_11?

What is 45 total atoms

300

Which would be the most reactive: magnesium (Mg), gold (Au), Helium (He), or mercury (Hg)?

What is magnesium (Mg)

400

How many valence electrons does Sulfur have?

 What is 6?

500

Name 4 signs of a chemical reaction taking place

What is 1. Color change (unexpected)

           2. Temperature change (unexpected)

           3. Bubbles (gas production)

           4. Sound/Smell 

           5. Light

           6. Precipitate