HW - HW: 1) Given two vectors a = 3.3i -3.2j and b...

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HW: 1) Given two vectors a = 3.3 i -3.2 j and b =6.6 i +8.6 j find the magnitude (in m ) of the vector a . Find the direction (in ° = deg) of the vector a . Find the magnitude of the vector b . Find the magnitude of the vector b . Find the magnitude of the vector a+b . Its direction? Find the magnitude of the vector b-a . Its direction? Find the magnitude of the vector a-b . Its direction?

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2) An automobile travels on a straight road for 50 km at 20 km/h . It then continues in the same direction for another 45 km at 75 km/h . (a) What is the average velocity ( km/h ) of the car during this 95 km trip? (Assume that it moves in the positive-x direction.) (b) What is its average speed in m/s ? Graph x versus t and indicate how the average velocity is found on the graph.
3) A particle had a velocity of 17 m/s in the positive x direction and 2.6 s later its velocity was 31 m/s in the opposite direction. What was the average acceleration of the particle during this 2.6 s interval? (The sign gives the direction of the acceleration (

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This note was uploaded on 10/24/2011 for the course PHYS 211 at USC.

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HW - HW: 1) Given two vectors a = 3.3i -3.2j and b...

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