Question

1. Suppose Arturo is standing on a spring bathroom scale in an elevator, which is at rest, on the 15^th floor. What is his acceleration? What forces are acting on him? What is the reading (in Newtons) on the bathroom scale if he has a mass of 150 kg? (Draw it out and Label it)

2. Now imagine disaster - the rope holding the elevator snaps, there are no safety features, and the elevator plunges down the shaft in free fall. Herrera avails himself of this excellent opportunity and checks Newton's Law further, since it is unlikely to repeat the experiment. As he stays calmly on the spring scale, what does the scale read as he plummets? Describe in words. . (Just answer qualitatively)

3. A football is kicked at an angle θ₀ = 37.0° with a velocity of 20.0 m/s, as shown. Assume the ball leaves the foot at ground level, and ignore air resistance and rotation of the ball (5 points)

Calculate:

(a) Maximum height

(b) Time of travel before the football hits the ground

(c) How far away it hits the ground

Answer 1