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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- 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?Check Your Understanding A particle starts from rest and has an acceleration function 510tm/s2 . (a) What is the velocity function? (b) What is the position function? (c) When is the velocity zero?wHillary clintun steris at her prison celldoor and walks 20m tD the ea t followed by lom to the north, then 5m west to reach thhe mess hallewhat was her displacement tor this walle in magnitule- dincetion for mat? A) 26,9 m at 33,7 N of E BIS.4m at 21,8 N of w ois.om at 33,73N of E D 8,0m at 2),80 N of w D18.0m mat 21.o Nof E
- The Yostiou of a Pendide sun Apace. is given Ay 3 where t a instantancous iu seconds. find the at A= 2:5 S . Veloity. in vedor formi, at A- 2158.A vehicle on Erclar is running track o radius llo0 cm at the Yate of Yokmper hour Thaugh whal will it tun. angle wll in 20sec.saillooat encounters shiting winds- A sailor Che Fail s 2. 0D km eaff, them in a small 3. 50 km routhea rf, and then in an unlino wn directim. ter final an addiimal dietanco positim 5.50 lum directly earft of Find the magnitude and the journey. gracw the vecton ardditim diagram. the 8tarti ngg point. the thi rd Jeg f direchim
- Ateation Accelexaten Can be deksmined Gram (muliele Arsuas) A) eqations of Censtant acceleration in the arceleration onslant. b equations of canstant aceleraton vegard less e the acceleration. 8S Constant. ) Slope of velocdy Versus fime Slope of posilion Veasus fime €) An accelecation VS Time giaph 0 froma thaical vake if he mokon s pakeble ar freefall.top of a building that i880m b yo dat een ball is thrown horizontalhy at aninitiall ground. At He same time tHa the red allis dped, a qr of He sane at wey slm JQ p building. the )A golf ball 3s launched with anint initial speed of 60m/s at an angle nf 450 above He ground. Find the horizontal distance (from tle launch point)a! which the CASSume Flat groundd Use lgl-10m/p? golf ball returns to te giound. ssmeAmpLE #长 S= 43-0l m The Figure belm stows a box with sliding down an ndined plane which makrs of ° with the horizontal. Tme coeffi ciènt af priction bef. the plane and box is D-75. The air resintance along the plarne is eaual to 2:5 y (in m/s). nssuming the boa started al rest, delermine the veloaty and dleplacement at any firme , t. mass of 20kg- angle an n- 20 kg Ra 免
- H.W: A ball is thrown with an initial speed voat an angle 0 below the horizontal from rooftop 44m above the ground. It lands 2sec later at a point Vor 32m from the base of the building. Find vo and 0 Ans. 0 = -37.32v, = 20. 1m/s 44oy H.W: A ball thrown up from a rooftop of height 40m lands on ground in 4s. (a)what is its maximum height above the ground? (b)what is its velocity 15m below the rooftop? Ans. (a)44.7m (b) v = -19.65 4An arrow hirts a target horizontaly lo cated at a distance OF 10 meters after l.2 seconds. t what initial velo city the anow launched ? Vje?The Figure belowshows a boxth sliding down am ndined plane which makps an angle of ° with the horisontal. The coeffi cènt af priction bef. the plane and box is D:75. The air resntance along the plarne is eaval to 2:5 Y (in m/s). Assuming the bork started al rest, determine the veloaty and dlspl a cement at amy frme ,t. mass of 20g m- 20kg mg Slie =tw Ra