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# cw4 - patel(kp9583 CW4 Mackie(20211 This print-out should...

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patel (kp9583) – CW4 – Mackie – (20211) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. DEADLINE IS CENTRAL TIME! 001 (part 1 of 2) 10.0 points A superhero flies 250 m from the top of a tall building at an angle of 29 below the horizontal. a) What is the horizontal component of the superhero’s displacement? Correct answer: 218 . 655 m. Explanation: Δ x Δ y 250 m Scale: 100 m - 29 Basic Concept: Δ x = d (cos θ ) Given: d = 250 m θ = - 29 Solution: Δ x = (250 m)[cos( - 29 )] = 218 . 655 m . 002 (part 2 of 2) 10.0 points b) What is the vertical component of the su- perhero’s displacement? Correct answer: - 121 . 202 m. Explanation: Basic Concept: Δ y = d (sin θ ) Solution: Δ y = (250 m)[sin( - 29 )] = - 121 . 202 m . 003 (part 1 of 2) 10.0 points A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 25 . 9 m / s. At the same time, it has a horizontal velocity of 57 m / s.

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