Lesson_1.2_Homework

Lesson_1.2_Homework - Lesson 2 Homework 1. A car traveling...

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1. A car traveling at 36 kmh -1 accelerates to 72 kmh -1 in 5.0 s. What is the acceleration of the car? 2. A car traveling at 90 kmh -1 is brought to rest in 15 s. What is the acceleration of the car? 3. A car initially at rest at the top of a hill rolls down the hill with a uniform acceleration of 5.0 ms -2 . How long will it take the car to roll down a distance of 150 m? 4. Sketch the graphs of (a) velocity v versus time t and (b) displacement y versus time t for a freely falling object. 5. 2 4 6 -2 -4 -6 6 2 4 8 10 12 14 v, m/s t, s A B C D E F The figure above shows how the velocity of a moving object changes with time. (i) What is the acceleration of the object from A to B? (ii) What is the acceleration of the object from C to D? (iii) What is the acceleration of the object from D to E? (iv) What are the times when the instantaneous velocities are zero. (v) What is the displacement of the object from t = 0 to t = 6 s? (vi)
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This note was uploaded on 05/01/2011 for the course PHY 2048 taught by Professor George during the Fall '10 term at Edison State College.

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Lesson_1.2_Homework - Lesson 2 Homework 1. A car traveling...

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