6 Warm up Wrap up 7 4, 6 Warm up Wrap up 1,3,7 Greenhouse effect.
Warm Up
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Transcript of Warm Up
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Warm Up
• A motorcyclist is traveling at 10 m/s along a flat and straight road. How long will it take to reach 32 m/s if the motorcycle can constantly accelerate at 4 m/s2?
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Test Material
• Vectors (pgs. 28-32), especially section 3.3, Chapter 3 review questions 6, 24-27 (for 27, just the first 2 questions)
• Linear motion (pgs. 10-16), Chapter 2 review questions 1-14, 26-30, 42-46
• Graphs of Motion (pgs. 21-24)
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Distance vs Time Graphs
• Work in groups for 4• Go to www.explorelearning.com• Launch the “Distance-Time Graph” Gizmo• Complete and hand in Exploration
worksheet by the end of the period– 1 per group, make sure to put ALL of your
names
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Warm Up
• Sit in your normal seats for attendance• In the Gizmo, what was happening when
the graph looked like:• A B C
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• Finish Gizmo
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Warm Up
• Which section of the graph shows:
• No movement?
• Fastest movement?
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Warm Up
• Calculate the instantaneous velocity for section A.
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Frame of Reference
• “Frame of Reference” is similar to “point of view”
• Motion is relative to the Frame of Reference
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0 m/s
4 m/s
2 m/s
5 m/s
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• Cheetahs have been observed running a distance of 5.50 x 102 m with an average speed of 1.00 x 102 km/h.
• How long (in hours) would it take a cheetah to cover that distance at the given speed?
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• If the cheetah’s average speed was only 85 km/h, how far would cheetah run in the same time?
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• A peregrine falcon, the fastest living creature, can fly 1.73 km downward in 25 s. What is the average speed of the falcon in km/h?
• Flying at it’s average speed, how long will it take to fly 300. km?
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• A destroyer is initially at rest. What is it’s maximum speed if it takes 2.00 min to reach that speed at a constant acceleration of 0.19 m/s2?
• How far will it have traveled in that time?