# An object is thrown upwards the graph shows the

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An object is thrown upwards. The graph shows the variation with timetof the velocityvof the object.What is the total displacement at a time of 1.5 s, measured from the point of release?A. 0 mB. 1.25 mC. 2.50 mD. 3.75 mB[N/A]
The diagram shows the forces acting on a block resting on an inclined plane. The angleθis adjusted until the block is just at the point of sliding.Rthe normal reaction,Wthe weight of the block andFthe maximum frictional force.is
What is the maximum coeﬃcient of static friction between the block and the plane?θθθ
[N/A]A student of massmis in an elevator which is accelerating downwards at an accelerationaWhat is the reading on the force meter?.
mamamg
MarkschemeExaminers reportB[N/A]The graph shows the variation with timetof the accelerationaof an object.Which of the following is the change in velocity of the object in the time interval 0 to 4s?-1-1-1
MarkschemeExaminers reportMarkschemeExaminers reportA. 1.5 kNB. 6.0 kNC. 7.5 kND. 9.0 kNB[N/A]−2D[N/A]An elevator (lift) and its load have a total mass of 750 kg and accelerate vertically downwards at 2.0 m s.What is the tension in the elevator cable?–2A car of mass 1000 kg accelerates on a straight, ﬂat, horizontal road with an accelerationa= 0.3 m s. The driving forceFon the car is opposed by a
resistive force of 500 N.
The net (resultant) force on the car is
MarkschemeExaminers reportA[N/A]
MarkschemeExaminers reportB[N/A]A tennis ball of massmmoving horizontally with speedustrikes a vertical tennis racket. The ball bounces back with a horizontal speedThe magnitude of the change in momentum of the ball isv.).).).
MarkschemeExaminers reportAn object of massmis connected via a frictionless pulley to an object of massM, whereM>m.Mrests on a horizontal frictionless surfaceWhat is the acceleration of the system?AThe statistics indicate that a good number of candidates overlooked the fact that velocity is a vector quantity. So its change, in this question is 8.0 ms, not 2.0 ms.-1-1
MarkschemeExaminers reportA system that consists of a single spring stores a total elastic potential energyEwhen a load is added to the spring. Another identical springconnected in parallel is added to the system. The same load is now applied to the parallel springs.What is the total elastic potential energy stored in the changed system?A.EB.C.D.ppB[N/A]A train on a straight horizontal track moves from rest at constant acceleration. The horizontal forces on the train are the engine force and a resistiveforce which increases with speed. Which graph represents the variation with timetof the powerPdeveloped by the engine?
MarkschemeExaminers reportD[N/A]The graph shows the variation with distancexof the magnitude of the net forceFacting on a body initially at rest.

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