Question

boy on top of a beilding of heigs bailthe same sime theows bal 8 horizontally with a spoed D-10mit Which of the two uils ach thegound rst a) Ball B b) Ball A c) Both reach the ground at the same time d) Depends on the value of ue e) Depends on the height of the buildingh A boy throws a ball into a basket with an ial velcity u-10 mis at an angle of 37 ahove the horizontal. At what time (n s) the hall has a vertical velocity component uy - 5ms a) 4.4 b) 8.4 c) 6.4 d) 12 e) 1.8 A physics 101 student decides to work in a circus as a the canmon-ball-man! He is projected by a canon with a speed of p-30 m's at an angle of,-53° above the horizontal, as in the figure. The student is ejected from a height hi-2 m above the ground and the safety net that he should land in is h 7 m above the ground. How far (in m) from the nozzle the net should be placed? a) 82.8 b) 73.5 c) 60.1 d) 51.3 e) 107.6 man with a mass of 70 kg is standing on a weight scale in an elevator. If the elevator is moving downward with a constant velocity of 2 m/s, then the reading of the scale (in N) is: a) 600 b) 700 e) 800 d) 900 e) 1000 U 2 m/s A 1500 kg car travels at a constant speed of 10 m/s. When its engine delivers 30 kW of power, he net force (in kN) resisting the motion is: ) 1 2

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Answer 1

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