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Mdcat-past-papers Quiz

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941. A boy throws a ball vertically upward. At highest point it has:



942. 4 bricks, 6cm thick, mass 2Kg lie flat. Work to stack them one over other?



943. Food we eat in 1 day ≈ energy of:



944. If speed of car is halved, kinetic energy becomes:



945. 1hp is equal to:



946. 1KWb =



947. An object has 1J of P.E. What is work done in terms of height?



948. Relation between K.E and momentum P:



949. Dolphin leaves water with kinetic energy. At top it has:



950. A ball with momentum 8Kg•m/s rebounds straight back without K.E loss. Change in momentum:



951. If mass 'm' dropped from height 'h', force of friction 'f', velocity at bottom 'v', relation is:



952. In energy inter-conversion, work done against friction is:



953. A boy raises 10Kg object to height 5m. Stored potential energy:



954. Work done by gravity pulling 10N stone from 250m cliff to ground:



955. Ball of mass 'm' dropped from height 'h' penetrates 'd' in sand. Average resistive force is:



956. If body mass 'm' and velocity 'v', then velocity becomes double. K.E becomes:



957. Angular displacement of a point moving in a circle 10 cm when displacement of projection of this point along vertical diameter of circle is 8.66 cm will be:



958. A body is moving in a circle with increasing angular velocity. At time t = 6 s the angular velocity is 27 rad/s. What is the radius of circle where linear velocity is 81 cm/s:



959. A wheel starts rotating from rest with an angular acceleration of 2 rad/s² till its angular speed becomes 6 rad/s. The angular displacement will equal to:



960. The number of revolutions in 3π radians is: