Physics 9702/01Multiple Choice QuestionsMarks : 50Class XItime: 1 hour

3. Express joule in terms of the base units of mass, length and time the kg, m ,s.A kg m -1s 2B kg m2 s2Ckgm-1s-1Dkgs-2 4. A racing car accelerates uniformly through three gear changes with the following average speeds.20 m s-1 for 2.0 s40 m s-1 for 2.0 s60 m s-1 for 6.0 sWhat is the overall average speed of the car?A12 ms-1B13.3ms-1C40 ms-1D48 ms-1

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6. An object is projected with velocity 40 ms-1 at an angle of 45 to the horizontal. Air resistanceis negligible. What is the speed of the object after 5 seconds?A21 ms-1B28 ms-1C35 ms-1D49 ms-1

7. A force of 2F acting on a particle of mass 10 kg produces an acceleration of 60 m s-2 .A force of 5F acting on a particle of mass M produces an acceleration of 50 m-1 .What is the mass of M?A. 3.3 kgB4.6 kg

C 21 kgD30 kg8. A uniform plank of weight 60 N is 2000mm long and rests on a support that is 600 mm from end E. At what distance from E must a 160N weight be placed in order to balance the plank?

A 150 mmB225mmC 375 mmD. 450 mm

9. An L shaped rigid lever arm is pivoted at point P.

Three forces act on the lever arm as shown in the diagram. What is the magnitude of the resultant moment of these forces about pint P?A. 30 NmB35 NmC50 NmD90 Nm

10. A man rows a boat with a speed of 18 km h-1 in the north_ west direction. The shoreline makes an angle of 15 south of west. What are the components of the velocity of the boat along the shoreline and perpendicular to the shoreline? A9kmh-1, 9 2kmh-1B9kmh-1, 9 3 kmh-1C9 2 kmh-1, 9 2 kmh-1D9 3 kmh-1, 9 kmh-1

11.what is not true about two forces that give rise to a couple?AThey act in opposite directionsB they act on the same bodyCThey act at the same pointDthey both have the same magnitude

16 The ratio of the average velocity of a train to its maximum velocity during a journey between two stations isA equal to 1Bgreater than 1Cless than 1D greater or less than 1

17.On the displacement time graph ,two straight lines make angle 60and 30,with time axis as shown in the figure. The ratio o velocities represented by them is

A1 2B1 3C3 1D2 1

18. Two bullets are fired horizontally with different velocities from the same height. Which bullet will reach the ground first?A. The slower oneB The faster oneC Both will reach simultaneouslyD It cannot be predicted

19. A solid block of material of density ,height h, and horizontal surface area A is immersed in a liquid. The pressures of the liquid at the upper and the lower surfaces are p1 and p2 respectively. Which of the following is an expression for the upthrust on the block?AAhgBAhg+p1gCAp2gDA(p1 p2)g

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