NUMS MDCAT 2024 PAPER PART 10 1. The relation between KE and momentum P is given by: K.E = 1/2 P/M K.E = 1/2 P/M*2 K.E = 1/2 P*2/M*2 K.E = 1/2 P*2/M 2. When dolphin leaves the water it has lots of kinetic energy. At its highest point its energy is: Neither Kinetic energy nor Potential Energy Elastic Potential Energy Kinetic energy Potential Energy 3. The absolute potential energy is given as Ug = -GmMe/R, The negative sign indicates that Earths gravitational field for mass “m” is: Repulsive Attractive Less attractive More repulsive less attractive 4. The velocity of an object moving in a circle is: Constant Negative Variable Zero 5. If you stops your car quickly by wearing seat belts, chance of injury is greatly reduced because seat belt applied: Opposite force Extra force Zero force Perpendicular force 6. A ball with momentum 8 kg m/s hits a wall and bounces straight back without losing K.E. The change in momentum of the ball is: 4 Ns 8 Ns 16 Ns -16 Ns 7. In projectile motion for which angle maximum height is half of its range 73° 65° 63° 68° 8. Sara goes around a circular track that has diameter of 20m. If she runs around the entire track for a distance of 180m. What is her angular displacement? 16 radians 50 radians 18 radians 8 radians 9. Angle swept by minute hand In one minute is: 36° 20° 6° 8° 10. To find the direction of angular displacement: Grasp the axis of rotation in right hand Put the thumb of left hand in the direction of circular motion Put the thumb aright hand in the direction of circular motion Grasp the axis of rotation in left hand Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11 12
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