Day 18 11-15-10 Topic: Review Objective: I will focus on information for the U2 test! Science Starter: Do a motion diagram for the following. t X.

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Presentation transcript:

Day Topic: Review Objective: I will focus on information for the U2 test! Science Starter: Do a motion diagram for the following. t X

Review Friday’s Quiz d-c-a-a-c-a-a-c-c-b-d-a 1.A Pontiac Trans-Am, initially at rest, accelerates at a constant rate of 4.0 m/s 2 for 6 s. How fast will the car be traveling at t = 6 s? 2.A tailback initially running at a velocity of 5.0 m/s becomes very tired and slows down at a uniform rate of 0.25 m/s 2. How fast will he be running after going an additional 2 seconds?

3.Jake rode his bike around Longview Lake. He had a acceleration of 10km/hr 2 for 2.5 hours. His final velocity was 25km/hr. What was Jake’s initial velocity? 4.The rate at which speed changes is called ____. 5.Give two ways the unit “meter per second per second” can be abbreviated. 6.If an object has an acceleration of 20 cm/sec 2, what do you know about how its speed changes over time? 7.The ____ of a line is found by dividing the vertical (rise) by the horizontal (run).

Calculate the acceleration shown by the graph.

1. Give a written description to describe the motion of this object. 2. Draw the motion diagram for the object. Include velocity and acceleration arrows.

t = V f -V i a V f = V i + at V i = V f - at a = Vf – Vi t ACCELERATIONACCELERATION #1 #2 #3 #4 PUT IN REFERENCE SECTION

X t X X X t t t t t t t V V V V d. b. c. a