Homework 03

# Homework 03 - homework 03 GADHIA TEJAS Due Feb 7 2007 4:00...

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homework 03 – GADHIA, TEJAS – Due: Feb 7 2007, 4:00 am 1 Question 1 part 1 of 2 10 points A particle travels to the right at a constant rate of 5 . 1 m / s. It suddenly is given a vertical acceleration of 2 . 8 m / s 2 for 4 . 7 s. What is its direction of travel after the acceleration with respect to the horizontal? Answer between - 180 and +180 . Answer in units of . Question 2 part 2 of 2 10 points What is the speed at this time? Answer in units of m / s. Question 3 part 1 of 2 10 points A particle at rest undergoes an acceleration of 1 . 5 m / s 2 to the right and 4 m / s 2 up. a) What is its speed after 7 . 7 s? Answer in units of m / s. Question 4 part 2 of 2 10 points b) What is its direction with respect to the horizontal at this time? Answer between - 180 and +180 . Answer in units of . Question 5 part 1 of 2 10 points A particle has constant acceleration vector vector a with components a x = 2 . 2 m / s 2 and a y = - 3 . 1 m / s 2 . Its initial velocity vector vector v 0 (at time t 0 = 0) has components v 0 x = 3 m / s and v 0 y = 2 . 5 m / s. What is the particle’s speed at time t = 3 . 3 s? Answer in units of m / s. Question 6 part 2 of 2 10 points What is the direction of the particle’s ve- locity at time t = 3 . 3 s? Please specify this direction as an angle (between - 180 and +180 ) from the x axis.

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