Unit 5- CFA 1 (Concept 1)

What is motion defined as?

• When an object increases its speed

• When an object changes its position

• When an object travels in a circle

• When an object remains stationary

A runner completes one lap around a 400m track. What is their displacement?

• 400 meters

• 200 meters

• 100 meters

• 0 meters

How is average speed calculated?

• Distance minus time

• Time divided by distance

• Distance divided by time

• Distance times time

If a car travels 60 miles in 2 hours, what is its average speed?

• 120 mph

• 30 mph

• 62 mph

• 40 mph

What is the main difference between speed and velocity?

• Velocity is always faster than speed

• Speed includes direction while velocity doesn't

• Velocity includes direction while speed doesn't

• They are exactly the same thing

On a distance vs. time graph, what does the slope represent?

• Acceleration

• Distance

• Speed

• Time

If you walk 3 miles east and then 4 miles north, how would you calculate your displacement?

• Add the distances together

• Subtract the distances

• Use the Pythagorean theorem

• Multiply the distances

What is a reference point?

• The final destination

• The speed of an object

• The starting position only

• An indicator that orients measurement

A sound wave travels at 343 m/s. If thunder is heard 3 seconds after lightning, approximately how far away did it strike?

• 1029 meters

• 114.3 meters

• 346 meters

• 686 meters

What is instantaneous speed?

• The average speed over a journey

• The speed at any given moment

• The fastest speed reached

• The slowest speed reached