Homework 22 You must show all work to receive credit. Write in a clear and organ

Question

Homework 22 You must show all work to receive credit. Write in a clear and organized manner, unclear work will not receive credit. 1 Warm-up Questions Anita is running to the right with a speed of 6.0 m/s, as shown in the figure. Balls 1 and 2 are thrown toward her by her friends (standing still on the ground). As measured by Anita, both balls are approaching her at a speed of 11 m/s 6.0 m/s You may assume all the motions are completely horizontal. a) According to her friends, what is the magnitude and direction of the velocity of ball 1 (1)? b) According to her friends, what is the magnitude and directon of the velocity of ball 2 ( ?

Explanation / Answer

(a) According to her friends, ball one is moving towords right with a velocity of 17 m/s.

(velocity of ball 1 with respect to (wrt) her friends = speed of ball wrt Anita + speed of Anita = 11m/s + 6 m/s = 17 m/s)

(b) According to her friends, ball two is moving towords left with a velocity of 5 m/s.

(velocity of ball 2 with respect to (wrt) her friends = speed of ball wrt Anita - speed of Anita = 11m/s - 6 m/s = 5 m/s)

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