Sulian throws Sarams pebbles at Danny's undowe at 2,3 M/s. How fast Cin M/S) does Sulian throw the Rebbes tf he throus them from 3.0m below Hhe wnd ow Theo pebble hit the window
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The Julian problem not the one on top.
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- Romeo is throwing pebbles gently up to Juliet's window, and he wants the pebbles to hit the window with only a horizontal component of velocity. He is standing at the edge of a rose garden hhh = 9.6 mm below her window and LLL = 8.2 mm from the base of the wall How fast are the pebbles going when they hit her window?A brick is thrown upward from the top of the building at an angle of 25degrees to the horizontal and with an initial speed of 15 m/s. If the brick is in flight forb30 sec how tall is the buildingAn airplane startsd at rest and accelerates at 8.3 m/s^2 at an angle of 31degrees south of west. After 9s, how far in the wesdterly direcetion has the plane traveled? After 9s, how far in the southernly direction has the pla e traveled?
- A projectile is shot at ahill, the base of which is 300 m away. Theprojectile is shot at 60°above the horizontalwith an initial speed of 75 m/s. The hill can beapproximated by a plane sloped at to thehorizontal. Relative to the coordinate systemshown in the following figure, the equation ofthis straight line is y= (tan 20°) x−109 in SIunits. Where on the hill does the projectileland? How long does the trip take?an albatrossglides at a constant 15 m/s horizontallyabove level ground, moving ina vertical plane that contains theSun. It glides toward a wall of heighth = 2.0 m, which it will just barelyclear. At that time of day, the angleof the Sun relative to the ground isu = 30. At what speed does theshadow of the albatross move (a) across the level ground andthen (b) up the wall? Suppose that later a hawk happens to glidealong the same path, also at 15 m/s.You see that when its shadowreaches the wall, the speed of the shadow noticeably increases.(c) Is the Sun now higher or lower in the sky than when the albatrossflew by earlier? (d) If the speed of the hawk’s shadow onthe wall is 45 m/s, what is the angle u of the Sun just then?A skier leaves a ski jump at 15.0 m/s at some angle ?. At what speed is he traveling athis maximum height of 4.50 m above the level of the end of the ski jump?
- Check Your Understanding A boat heads north in still water at 4.5m/s directly across a river that is running east at 3.0 m/ s. What is the velocity o the boat with respect to Earth?Raindrops fall vertically at 43 m/s relative to the earth. What does an observer in a car moving at 22.0 m/s a straight line measure as the velocity of the raindrops?An experimental jet rocket travels around Earth along its equator just above its surface. At what speed must the jet travel if the magnitude of its acceleration is g ?
- A student ires a canonball with a speed of 35.0m/s from a height of 50.om/s at an angle of 62 degrees. How long did the ball remain in the air ? How far from the base of the building did the ball land? How fast was the ball moving as it struck the ground?My pug/bulldog mix, Georgia, who is blind and deaf, gets a whiff of her dinner. As soon as it registers to her that it's dinnertime, she runs 4.12 meters from the middle of our living room to our kitchen, where she is satiated with her grub. If it takes her 4.45 s to get to the kitchen, what was her speed in m/s to the nearest hundredth?To find the height of an overhead power line, you throwa ball straight upward. The ball passes the line on the way upafter 0.75 s, and passes it again on the way down 1.5 s after itwas tossed. What are the height of the power line and the initialspeed of the ball?