28/03/2020 Dynamics – Momentum and Circular Motion(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your Dynamics - Momentum and Circular Motion(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. Which of the following is the correct formula for calculating momentum of moving objects?P = m/VP = mVP = m + VP = m-V2. A bat exerts a horizontal force on a 0.145-kg ball ofF(t) = [1.6t - 6t^2] between t = 0 and t = 2.50 sCalculate the impulse exerted by the bat on the ball at t=2.50s. 33.5N.s0N.s-33.5N.s-26.25N.s3. The mass 'm' of the object is moving with a straight line motion and another object is mass equal to the first object and it is moving along the same direction. after collision what is the speed of the both objectsDifferent velocitiesVelocity of the first object is greater than anotherDifferent direction and different velocitiesBoth velocity's is same4. In the marble-cup momentum lab, the velocity (speed) of the marble was increased by....Decreasing the mass of the marbleIncreasing the mass of the marble.Moving the marble lower on the ramp (ruler).Moving the marble farther up the ramp (ruler).5. Because of the principle of conservation of momentum, a rocket can get rid of its empty stagesTo maintain velocityTo decrease velocityTo increase massTo increase velocity6. What could be the momentum of a 1,300-kg car that moves at 4 m/s?5,200 N5,200 kg.m/s52 N52 kg.m/s7. Read the following statement :"If no net force or net impulse acts on a system, the momentum of that system cannot change." What does it refer to? Law of MomentumLaw of ImpulseLaw of Conservation of MomentumNewton's 3rd Law8. Momentum hasForce and VelocityDirection onlyMagnitude onlyMagnitude and direction9. Two skaters stand facing each other. One skater's mass is 60 kg, and the other's mass is 72 kg. If the skaters push away from each other without spinning,Their total momentum decreases.The lighter skater has less momentum.Their total momentum doubles.Their momenta are equal but opposite.10. A blue billiard ball is moving at speed "v" towards a red ball of the same mass standing still. Assuming it is an elastic collision, after hitting the red ball, the blue one:Stops.Moves along with the red ball at "v".Moves along with the red ball at half "v".Bounces back.11. In a perfectly elastic collision, a ball dropped from a certain height would bounce At a lesser heightWould stick to the floorAt a greater heightAt the same height12. The measure ofÂ how difficult it is to stop a moving object is known as the object's ______InertiaMomentumVelocityMass13. The unit for theÂ quantity "MOMENTUM" is __________ in the metric system.Kg m/sKg mKg m/s/s/sKg m/s/s14. Momentum means or is most associated with: ImpulseInertia in MotionInertiaNewton's second Law15. In a two-body collision,Both momentum and kinetic energy are always conservedMomentum is always conserved.Kinetic energy is always conserved.Neither momentum nor kinetic energy is conserved.16. What type of collision occurs when the objects bounce off of each other after making contact?Elastic collisionInelastic collisionSticky collisionRebound collision17. If your dog pulls the rope with 15 N force to the right and you pull the rope 5 N force to the left.Â What is theÂ forceÂ andÂ directionÂ in Newtons of the final motion? 10 Newtons to the left15 Newtons to the right10 Newtons to the right15 Newtons to the left18. How can defined change in momentumForce*change in timeAll of the aboveMass*velocityImpulse19. Elastic collision isObjects that collide and stick togetherNone of the aboveObjects that collide and bounce off of each otherObjects that collide and decrease their velocity20. What is the momentum of a 15-kg rock rolling atÂ 3 m/s? 5 kg m/s45 kg m/s18 kg m/s0 kg m/s21. A 0.2 kg red cue ball rolling at 1.4 m/s elastically collides directly with a 0.2 kg 9-Ball at rest.Which of the following is true?The red cue ball would have a velocity of 0 m/sThe 9-ball would have a velocity greater than 0.5 m/s but less than 2m/sThe red cue ball would have a velocity greater than 1.0 m/sThe 9-ball would have a velocity greater than 2 m/s22. A bowling ball hasÂ 9 kg m/s of momentum when it is rolledÂ 6 m/s.Â What is the mass of the bowling ball? 3 kg1.5 kg54 kg15 kg23. A 71.25 kilogram motorcycle is moving at a speed of 33.75 m/s. What is the momentum of the cycle? Greater than 200 kg m/sNone of the aboveEqual to 200 kg m/sLess than 200 kg m/s24. Which of the following objects have the least momentum? 5 Kg rock not moving3 Kg rock falling at 10 m/s2 kg rock falling at 3 m/s.4 kg rock falling at 2 m/s25. Two swimmers relax close together on air mattresses in a pool. One swimmer's mass is 48 kg, and the other's mass is 55 kg. If the swimmers push away from each other, Their total momentum triples.Their momenta are equal but opposite.Their total momentum decreases.Their total momentum doubles.26 out of 25Time is Up! Time's up