Five identical objects, A through E, are launched simultaneously from the ground. Air resistance can be ignored. Rank the objects in order of when they hit the ground, from first to last. Explain your answer. y (m) 2 1.5 1 0.5 0+ 0 C A 2 B D 4 E 6 8 x (m)

An arrow is shot at an angle of θ = 45∘ above the horizontal. The arrow hits a tree a horizontal distance D = 220m away, at the same height above the ground as it was shot. Use g = 9.8m/s2 for the magnitude of the acceleration due to gravity. a.Find ta, the time that the arrow spends in the air. b. Suppose someone drops an apple from a vertical distance of 6.0 meters, directly above the point where the arrow hits the tree.

+ 3 * E D Using this figure, identify at which of the points the ball's velocity is zero. O O O O $ 4 Vor point A point point C point D all of them R LLI B F % 5 Si T G 6 Y 4- & H 7 99+ B * hp 4+ 8 J IC ( K O L P 77°F Mostly i

An airplane flies horizontally at a speed of 369 km/h and drops a crate that falls to the horizontal ground below. Neglect air resistance.  A. If the altitude of the plane was 628 m, then how far, horizontally in meters, did the crate move as it fell to the ground?  B. What was the speed of the crate, in m/s, just before it hit the ground?

A TI Yo Ac As Inv Eva Knc need to: 1. Ignore air resistance when answering all parts of this question. a. A golf ball is hit at 60.0° to the horizontal with an initial velocity of 1.50 x 102 ms¹. It lands at the same height from which it is hit. i. Show that the initial vertical velocity of the ball is 1.30 x 102ms¯ (1) 1/2 ii. Find the time of flight of the golf ball. iii. Calculate the range of the ball. KA1 (1) KA2 (3) KA2 (2) b. A baseball is hit at the same angle and initial speed as the golf ball in part a. However, its initial height is 1.3m above the ground. Explain why the baseball will travel further than the golf ball from part a.

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of v, = 20.5 m/s. The cliff is h = 53.0 m above a flat, horizontal beach as shown in the figure. y

Doc G post I Hom a Ama G tree A- Unis O Pum > Con G Con Men G card O Hall Blue G som com/courses/60572/assignments/857685 Page of 5 ZOOM A playground is on the flat roof of a city school, 6.00 m above the street below (Fig. P3.19). The vertical wall of the building is h = 7.00 m high, to form a 1-m-high railing around the play- ground. A ball has fallen to the street below, and a passerby returns it by launching it at an angle of 0 = 53.0° above the horizontal at a point d = 24.0 m from the base of the build- ing wall. The ball takes 2.20 s to reach a point vertically above the wall. (a) Find the speed at which the ball was launched. (b) Find the vertical distance by which the ball clears the wall. (c) Find the horizontal distance from the wall to the point on the roof where the ball lands. • Previous 70 PriSc Insec F12 F11 F10 F9 F7 F6 FS

Susan lives 1.85 km [E] from the school and her good friend, Mary, lives 1.14 km [W] from the school If it took Susan 35 minutes and 20 seconds to travel from her house to Mary's house, what would be Susan's average velocity, in m/s? 1.4 m/s [E] 1.41 x 103 m/s [W] 1.4 m/s [W] 0.335 m/s [E]

During a lecture demonstration, a professor places two coins on the edge of a table 1.3m above the floor. She then flicks one of the coins horizontally off the table so it is moving at 5.0 m/s horizontally when it leaves the table. Simultaneously she gently nudges the other coin over the edge. Which coin hits the floor first? a. The coin gently nudged over the side. b. The coin flicked horizontally. c. They hit the floor at the same time.

Find the components of v V tot, x Vtot, y = = y A tot V tot along the x and y axes in the figure below, where 0 = 23.0° and v₁ = 5.08 m/s. tot 23.0% 26.5° Vtot = VA + VB VB X