Motion Mrs. Bellah

What two things do you need to determine speed?

• time and direction

• ∆ d/t

  (change in distance over time)

• velocity/time

• change in distance and direction

What is the formula for velocity?

• Velocity = Displacement / Time
• Velocity = Time / Acceleration
• Velocity = Force / Mass

Find speed when distance is 142 km and time is 2 hours.

• 71km/hr
• 52km/hr
• 17km/hr
• 90km/hr

What is the formula to calculate speed?

• S = t/d
• S = d/t
• S = d x t
• S = t x d

Jacob ran a 5k in 24 minutes.

• Speed
• Velocity
• Acceleration

You use change in velocity over time to find what?

• velocity

• acceleration

• displacement

• distance

A car moved 80 km to the South. What is its displacement?

• 20 km South

• 50 km East

• 80 km South

• 160 km North

What is the unit of measurement used in physics for speed?

• Seconds

• Seconds per meter

• Meters

• Meters per second

Velocity is a vector measurement because it has both a magnitude and a ________.

• distance

• direction

• time

• speed

If a person runs 100 meters in 10 seconds, what is their average speed?

• 1 m/s

• 5 m/s

• 10 m/s

• 100 m/s