Physics 2010 Exam 2

Physics 2010 Exam 2

1. Chapter 5: circular motion and gravitation

   • Circular Motion
   • centripetal acceleration
     • ac=(V^2)/r
     • F=(mV^2)/r
   • Newton's Laws of Gravitation
     • F= (Gm1M2)/(r^2)

2. Chapter 6: work and energy

   • Work
     • W= F(delta r)cos(theta)
     • Force displacement curve
     • W= delta KE
     • -W= delta PE
   • Kinetic energy
     • KE= (1/2)m(v^2)
     • Energy released
   • Potential energy
     • Energy stored
     • delta PE= PEi - PEf
   • Conservation of energy
     • KEi + PEi +W = KEf + PEf
   • Hooke's law
     • F= -kx
     • PE= (1/2)k(x^2)
   • Gravitation potential energy
     • PE=mgy
     • PE= (Gm1m2)/r

3. Chapter 7: momentum, impulse, and collision

   • Momentum
     • P=mv
     • conservation of momentum
   • Impulse
     • Impulse = F(delta t) = DeltaP
   • Collision
     • Elastic
       • Objects bounce off each other, energy is not conserved.
     • Inelastic
       • Objects stick together, energy is conserved.