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. What could be the momentum of a 1,300-kg car that moves at 4 m/s?5,200 kg.m/s52 N52 kg.m/s5,200 N2. 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 height3. What is the average force that a gun exerts on a bullet shot with an impulse of 14,000 N.s? Assume it took 0.4 s for the bullet to leave the barrel.5,600 N56,000N30,000 N35,000N4. 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,The lighter skater has less momentum.Their total momentum doubles.Their momenta are equal but opposite.Their total momentum decreases.5. Because of the principle of conservation of momentum, a rocket can get rid of its empty stagesTo increase massTo maintain velocityTo increase velocityTo decrease velocity6. A 50 kg Corvette (car) has a momentum of 500 kg m/s. How fast is the car going? 250 m/s25,000 m/s70 m/s10 m/s7. The unit for the quantity "MOMENTUM" is __________ in the metric system.Kg m/s/sKg m/sKg mKg m/s/s/s8. 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 objectsVelocity of the first object is greater than anotherDifferent velocitiesBoth velocity's is sameDifferent direction and different velocities9. 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.s-26.25N.s33.5N.s0N.s10. In a two-body collision,Neither momentum nor kinetic energy is conserved.Kinetic energy is always conserved.Momentum is always conserved.Both momentum and kinetic energy are always conserved11. Momentum means or is most associated with: Newton's second LawImpulseInertiaInertia in Motion12. 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:Bounces back.Stops.Moves along with the red ball at "v".Moves along with the red ball at half "v".13. Which of the following is the correct formula for calculating momentum of moving objects?P = mVP = m + VP = m/VP = m-V14. What one characteristics of a bullet gives it its large momentumwhen fired from a hand-gun?MassShapeVelocityInertia15. Which of the following is a way to decrease momentum? Increase velocityIncrease forceIncrease frictionIncrease impulse16. Elastic collision isObjects that collide and decrease their velocityObjects that collide and stick togetherNone of the aboveObjects that collide and bounce off of each other17. 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 farther up the ramp (ruler).Moving the marble lower on the ramp (ruler).18. How can the momentum of a moving object be increased?Decrease the mass of the object.Increase the mass of the object.Decrease the object's velocity.Decelerate the object until it stops.19. Which of these marbles would have the greatest momentum assumingthey all travel at the same velocity?6.2 gram white marble4.8 grams red marble2.3 gram clear marble4.3 grams blue marble20. 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 9-ball would have a velocity greater than 0.5 m/s but less than 2m/sThe red cue ball would have a velocity of 0 m/sThe 9-ball would have a velocity greater than 2 m/sThe red cue ball would have a velocity greater than 1.0 m/s21. A 10 kg body moving with 33m/s and the another body is moving with 55m/s with mass 2kg both body's collide with one other this is an completely inelastic collision. what is the final velocity after the collision27.5m/s4m/s12.6m/s5.6m/s22. 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/s23. What is true about impulse and momentumMomentum and impulse are unrelated to each otherMomentum is the mass of a substance multiplied by the velocity while impulse is just the change of momentumImpulse is mass times velocity while momentum is force times timeImpulse deals with velocity while momentum deals with change in velocity24. Why is falling on a floor with more give less dangerous than falling on a floor with less give?Because the floor with more give allows a greater time for the impulse that reduces the momentum of fall to zero.A greater time for a change in momentum results in less force.Because falling on a floor with less give comprises shorter time.Because falling on a floor with more give causes less impact. Because falling on a floor with more give includes greater momentum.25. The momentum of a body is equal to its mass multiplied by its velocity.FalseTrue26 out of 25Time is Up!