Unit 2 Lesson 2 Learning Guide.pdf

# 91417 514 pm unit 2 lesson 2 learning guide page 3 of

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9/14/17, 5)14 PM Unit 2 Lesson 2 Learning Guide Page 3 of 6 10/10 90 m/s 79 m/s 56 m/s 30 m/s 10/10 -2.593 s 0.386 s -0.386 s 2.593 s because the object is falling down in direction A car is initially traveling at 12 m/s when the driver sees a yellow light ahead. He accelerates at a constant 7 m/s^2 for 6 s in order to make it through the intersection. What was the velocity at the end of this time? * You are in a car travelling to dinner when a light ahead suddenly turns red. How long will it take the care to stop if the car decelerates at a rate of -2.7 m/s^2 as it slows from 7.0 m/s to a complete stop? * Why is g negative? *

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9/14/17, 5)14 PM Unit 2 Lesson 2 Learning Guide Page 4 of 6 10/10 x= Vi (t)+ 1/2 a t^2 x= 1/2 (Vi + Vf) t Vf = Vi + at Vf^2 = Vi^2 + 2ax Other: 10/10 62.83 m 3.70 m -3.70 m -62.83 m After reading the following scenario choose the equation that you would use to answer the question. Your physics teachers are in an SUV driving at a velocity of 34 m/s when all of a sudden they see a bull in the middle of the road and have to come to an immediate stop. If their acceleration was -9.2 m/s^2 determine the displacement of the car during the time it came to a stop. * Now solve the problem using the equation you picked out above. Your physics teachers are in an SUV driving at a
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