Ch 09: Momentum & ImpulseSee all chapters
All Chapters
Ch 01: Units & Vectors
Ch 02: 1D Motion (Kinematics)
Ch 03: 2D Motion (Projectile Motion)
Ch 04: Intro to Forces (Dynamics)
Ch 05: Friction, Inclines, Systems
Ch 06: Centripetal Forces & Gravitation
Ch 07: Work & Energy
Ch 08: Conservation of Energy
Ch 09: Momentum & Impulse
Ch 10: Rotational Kinematics
Ch 11: Rotational Inertia & Energy
Ch 12: Torque & Rotational Dynamics
Ch 13: Rotational Equilibrium
Ch 14: Angular Momentum
Ch 15: Periodic Motion (NEW)
Ch 15: Periodic Motion (Oscillations)
Ch 16: Waves & Sound
Ch 17: Fluid Mechanics
Ch 18: Heat and Temperature
Ch 19: Kinetic Theory of Ideal Gasses
Ch 20: The First Law of Thermodynamics
Ch 21: The Second Law of Thermodynamics
Ch 22: Electric Force & Field; Gauss' Law
Ch 23: Electric Potential
Ch 24: Capacitors & Dielectrics
Ch 25: Resistors & DC Circuits
Ch 26: Magnetic Fields and Forces
Ch 27: Sources of Magnetic Field
Ch 28: Induction and Inductance
Ch 29: Alternating Current
Ch 30: Electromagnetic Waves
Ch 31: Geometric Optics
Ch 32: Wave Optics
Ch 34: Special Relativity
Ch 35: Particle-Wave Duality
Ch 36: Atomic Structure
Ch 37: Nuclear Physics
Ch 38: Quantum Mechanics

Example #1: Elastic Collisions

Additional Problems
A 5 kg and a 3 kg mass collide head on, with the 5 kg mass moving at an initial speed of 15 m/s and the 3 kg mass moving at an initial speed of 10 m/s. Answer the following questions: a) If the collision is completely inelastic, what is the final speed and direction of each mass? b) If the collision is elastic, what is the final speed and direction of each mass?
In the “slingshot effect,” the transfer of energy in an elastic collision is used to boost the energy of a space probe so that it can escape from the solar system. All speeds are relative to an inertial frame in which the center of the sun remains at rest. A space probe moves at 6.4 km/s toward Saturn, which is moving at 6.4 km/s toward the probe. Because of the gravitational attraction between Saturn and the probe, the probe swings around Saturn and heads back (nearly) in the opposite direction with speed vf. By what factor is the kinetic energy of the probe increased? 1. 16.2591 2. 22.1363 3. 9.14008 4. 4.80263 5. 6.404 6. 7.94215 7. 3.7032 8. 9.0 9. 3.61 10. 9.33331
A projectile of mass m 1 moving with a speed v1 in the +x direction strikes a stationary target of mass m2 = 2m1 head-on in an elastic collision. Find the final velocity of the projectile m1. Hint: You can use the energy and momentum principles. 1. -1/3 v1 2. -1/4 v1 3. -1/5 v1 4. 1/3 v1 5. -1/2 v1 6. v1 7. -5 v1 8. 3 v1
An 54.5 kg object moving to the right at 55.9 cm/s overtakes and collides elastically with a second 35.7 kg object moving in the same direction at 39 cm/s. Find the velocity of the second object after the collision.1. 39.26342. 56.50273. 38.82144. 55.32435. 59.42246. 39.98137. 58.31228. 57.21069. 41.241410. 48.0473