10.2 Review Questions.

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Presentation transcript:

10.2 Review Questions

How is speed related to distance and time? speed is distance/time 2. How would decreasing the time it takes you to run a certain distance affect your speed? Your speed would increase 3. What two things do you need to know to describe the velocity of an object? speed and direction of motion

4. Compare Am and Ellie left school at the same time 4. Compare Am and Ellie left school at the same time. Amy lives farther away than Ellie, but she and Ellie arrived at the homes at the same time. Compare the girls’ speeds. Amy traveled faster than Ellie. 5. Calculate Carlos lives 100 m away from his friend’s home. What is his average speed if he reaches his friend’s home in 50s? S = d/t S = 100 m/50s S = 2 m/s

6. Synthesize If you watch a train go by at 20 m/s, at what speed will the people sitting on the train be moving relative to you? 20 m/s Would someone walking toward the back of the train (outside of the train) have a greater or lesser speed relative to you? Explain. They would have a lesser speed because of the frame of reference.