physics, please solve question 7 Q1: If A=41-6 and B = 21 +10 then the vector C=2Ã-B has a magnitude of:a) 7.2b) 42c) 23d) 64Q2: A block of mass 0.3 kg is dropped from rest at a height 2 m directly above the top of a vertical springhaving a force constant 100 N/m. The maximum compressed distance (in m) of the spring isa) 0.44b) 0.22c) 0.63d) 0.38Q3: Two vectors lying in the xy plane are given by the equations A=51-21 and B-21-31. AxB equals:a) -19kb) 11kc) 19kB=d) -11kQ4: A stone is thrown vertically upward with an initial speed of 14 m/s. It will rise to a maximum height(in m) of:a) 13.1b) 9.8c) 39.2d) 19.4Q5: The area under a velocity-time graph represents:a) speedb) change in acceleration c) change in velocityd) displacementQ6: An elevator has a mass of 1600 kg and is carrying 200 kg passengers. A constant friction force of 4000N retards its motion upward. What power delivered by the motor (in W) is required to lift the elevator at aconstant speed of 4 m/s?a) 4.33*10*b) 2.73*104c) 8.80*104d) 3.53*10*Q7: In a given displacement of a particle, its kinetic energy increases by 25 J while its potential energydecreases by 10J. determine the work of the nonconservative forces acting on the particle during thisdisplacement.a)-15Jb) 10 Jc) 15 Jd) -40 JQ8: A football player shot the ball at an angle of 40° above the horizontal at a speed of 8 m/s. How far (inm) will the ball reach in the horizontal direction?a) 22.6b) 14.5c) 9.8d) 6.300

Name: physics, please solve question 7 Q1: If A=41-6 and B = 21 +10 then the
Uploaded: 2024-03-20T06:57:25.000Z
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Description: physics, please solve question 7 Q1: If A=41-6 and B = 21 +10 then the vector C=2Ã-B has a magnitude of:a) 7.2b) 42c) 23d) 64Q2: A block of mass 0.3 kg is dropped from rest at a height 2 m directly above the top of a vertical springhaving a force con