A very small steel marble is shown rolling at a constant speed on a horizontal table. The marble leaves the table at N, falls, and hits the ground at M. This is illustrated in the diagram below which is drawn to scale. Calculate the time it took the marble to travel from L to M. y (in cm) 6 16 20 36 40 56 60 76 80 906 100 x (in cm) 7 Submit Answer | | Incorrect. Tries 5/20 Previous Tries Post Discussion @Send Feedback An artillery shell is launched on a flat, horizontal field at an angle of a = 43.30 with respect to the horizontal and with an initial speed of vo = 312 m/s. What is the horizontal distance covered by the shell after 7.69 s of flight? Submit Answer Tries 0/20 What is the height of the shell at this moment? Submit Answer Tries 0/20 Post Discussion Send FeedbackA boy standing on top of a building throws a small ball from a height of H1 = 35.0 m. (See figure.) The ball leaves with a speed of 25.7 m/s, at an angle of 69.0 degrees from the horizontal, and lands on a building with a height of H2 = 12.0 m. Calculate for how long the ball is in the air. (Neglect air friction, and use g = 9.81 m/s2.) H1 H , Submit Answer Tries 0/20 Post Discussion Send FeedbackAfter a golf ball is hit it takes off with an initial speed of 28.8 m/s and at an angle of 39.0 with respect to the horizontal. The golf field is flat and horizontal. Neglecting air resistance how far will the golf ball fly? Submit Answer Tries 0/20 How high will the golf ball rise? Submit Answer Tries 0/20 How much time will the ball spend in the air? Submit Answer Tries 0/20 How far would the ball fly if the initial speed was doubled? Submit Answer Tries 0/20 How much time would the ball spend in the air in this second case? Submit Answer Tries 0/20Two rocks are thrown from the top of a very tall tower. One of them is thrown horizontally to the left with an initial velocity of vies = 18.7 m/s. The other rock is throw with an initial velocity of vijgps = 12.3 m/s. (See figure.) Vieft Vi ght How far will the rocks be from each other after 2.97 s? (Neglect air resistance and assume that the rocks will not hit the ground within the time period in question.) Submit Answer Tries 0/20 n horizontally to the right Two rocks are thrown from the top of a very tall tower. One of them is thrown vertically up with an initial velocity of vy, = 16.1 m/s. The other rock is thrown horizontally to the right with an initial velocity of vyjgp = 11.6 m/s. (See figure.) ~r - - - How far will the rocks be from each other after 2.84 s? (Neglect air resistance and assume that the rocks will not hit the ground or the tower.) Tries 0120 [ (&) Post Discussion 7 Send Feedback A fireman, 21.8 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 42.0 above the horizontal. If the speed is 35.2 m/s, at what height will the Next content resource the building? Submit Answer | Tries 0/20