Begin 9.7 Bell Work Questions 9.7 Motion - Review Begin 9.7 Bell Work Questions

11.7 Motion - Review

What is necessary to describe motion accurately and completely? Frame of Reference

What is the difference between distance and displacement? The length of the path between two points. Displacement The difference between the original or starting point and the final or end position.

What is the difference between distance and displacement?

How do you combine displacements and velocity vectors? Vector addition

What is the final value of each plane?

What is the final value of each plane?

What is Speed? The distance traveled over a given amount of time

What is equation for speed? V = d / t V = speed d = distance t = time

What are the units for speed? m / s Meters per second

What is average speed? Speed over the entire duration of a trip

What is instantaneous speed? Speed at a particular instant in time.

What does the slope of a distance-time graph tell you? Speed

What is velocity? Speed with direction (Vector)

What is equation for velocity? V = d / t

a) What does the straight diagonal line represent? Constant Speed

b) What is the speed of the object at 5 seconds? V = d / t d = 50 m t = 5 s V = 50m / 5s v = 10 m/s

A vehicle travels 2,445 meters in 415 seconds toward the evening sun A vehicle travels 2,445 meters in 415 seconds toward the evening sun. What is its velocity? V = d / t V = d / t V = ? V = 2,445 m / 415 s d = 2,445 m V = 5.89 m/s towards the sun t = 415 s

What is the speed of a bus that travels 250,000 meters in 18,000 seconds? V = d / t V = d / t V = 250,000 / 18,000 V = ? d = 250,000 meters V = 13.89 m/s t = 18,000 seconds

What distance will a car traveling 165 m/s travel in 30 seconds? V = d / t d = v x t V = 165 m/s d = 165 m/s x 30 seconds d = ? d = 4,950 meters t = 30 seconds

Describe what is occurring in each section of the distance-time graph. Section 1 – Constant Speed Section 2 – Increased Constant Speed Section 3 – Stopped Section 4 – Constant Speed Back toward the start Section 5 – Stopped Section 6 – Constant Speed Back to Beginning

Jack Sparrow is on his pirate ship, the Black Pearl, sitting in Port Royal waiting for his pirate friends to attack. He fires a warning shot with his cannon at 20 m/s at the inland. If one of the crewmembers is sitting on the island, next to the ship, how fast is the cannonball moving from the crewmembers perspective? 20 m/s

The Black Pearl starts moving at 10 m/s The Black Pearl starts moving at 10 m/s. If Captain Jack fires another shot with his cannon at 20 m/s in the same direction that the boat is moving. How fast is the cannonball moving from the crewmembers perspective? 30 m/s

The Black Pearl is still moving at 10 m/s, but Captain Jack turns the cannon around and fires another shot with his cannon at 20 m/s in the opposite direction that the boat is moving. How fast is the cannonball moving from the crewmembers perspective? 10 m/s

Section 11 Quiz!!!