28/03/2020Dynamics – 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. How can defined change in momentumForce*change in timeMass*velocityImpulseAll of the above2. Which of these marbles would have the greatest momentum assumingthey all travel at the same velocity?4.8 grams red marble2.3 gram clear marble6.2 gram white marble4.3 grams blue marble3. A bowling ball has 9 kg m/s of momentum when it is rolled 6 m/s. What is the mass of the bowling ball?3 kg15 kg1.5 kg54 kg4. 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.Moves along with the red ball at "v".Stops.Moves along with the red ball at half "v".5. 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 velocitiesDifferent direction and different velocitiesVelocity of the first object is greater than anotherBoth velocity's is same6. A person sitting in a chair with wheels stands up, causing the chair to roll backward across the floor. The momentum of the chairRemained the same.Was zero when the person got out of the chair and increased while the person sat.Was zero while stationary and increased when the person stood.Was greatest while the person sat in the chair.7. If your dog pulls the rope with 15 N force to the right and you pull the rope 5 N force to the left. What is the force and direction in Newtons of the final motion?15 Newtons to the right10 Newtons to the right15 Newtons to the left10 Newtons to the left8. Which of the following is the correct formula for calculating momentum of moving objects?P = m-VP = m/VP = m + VP = mV9. What impulse occurs when an average force of 15 N is exerted on a cart for 3.0 s?55 N.s50 N.s40 N.s45 N.s10. What one characteristics of a bullet gives it its large momentumwhen fired from a hand-gun?ShapeInertiaVelocityMass11. 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/s12.6m/s4m/s5.6m/s12. If a body have mass 20kg and its moving along x-axis with 10m/s. another body have mass 50 kg and it rest along the same direction. after collision what is the velocity of the first body7m/s8000m/s0m/s-10m/s13. Which of the following objects have the least momentum?2 kg rock falling at 3 m/s.4 kg rock falling at 2 m/s5 Kg rock not moving3 Kg rock falling at 10 m/s14. When comparing the momentum of two moving objects, which of the following is correct?The more massive object will have less momentum if its velocity is greater.The object with the higher velocity will have less momentum if the masses are equal.The more massive object will have less momentum if the velocities are the same.The less massive object will have less momentum if the velocities are the same.15. What type of collision occurs when the objects bounce off of each other after making contact?Sticky collisionInelastic collisionElastic collisionRebound collision16. 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.-26.25N.s33.5N.s0N.s-33.5N.s17. A small car (mass = 71.25 kilograms), moving at 52.5 m/s, crashes head on with a 285 kilogram truck moving at 33.75 m/s in the opposite direction (negative velocity). If the two cars become intertwined and mangled (inelastic), with what velocity does the wreckage move? (Don't forget direction!)A magnitude lesser than 30m/s moving in the initial direction of the carA magnitude lesser than 30 m/s moving in the initial direction of the truckA magnitude lesser than 30 m/s moving in the initial direction of the carA magnitude greater than 30 m/s moving in the initial direction of the truck18. In the marble-cup momentum lab, the velocity (speed) of the marble was increased by....Moving the marble farther up the ramp (ruler).Decreasing the mass of the marbleIncreasing the mass of the marble.Moving the marble lower on the ramp (ruler).19. A ball of mass 3kg is moving to the right with velocity 3m/s and a ball of mass 1kg is moving to the left with velocity 2m/s. we can use the principle of conservation of mass to determine the velocity of the other ball after the collision.FalseTrue20. 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/s21. Elastic collision isObjects that collide and bounce off of each otherObjects that collide and decrease their velocityObjects that collide and stick togetherNone of the above22. Momentum hasMagnitude onlyForce and VelocityDirection onlyMagnitude and direction23. During a car collisiion the mometum of all moving object is changed. The change was in the speed of the moving objects. All moving objects (cars) came to rest. Which of these impulses would result in least injury to the vehicle passengers?When a small force is applied for a very short time.When a large Force is applied for a long period of time.When a very large force is applied for a very short period of time.When a small force is applied over a long period of time24. In the marble-cup momentum lab, the "distance the cup moved" was an indirect measurement for the marble's....AccelerationSpeedMomentumVelocity25. 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 decreases.Their total momentum doubles.Their momenta are equal but opposite.Their total momentum triples.26 out of 25Time is Up!