# MCAT PHYSICS 1

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1. Newtons 3 laws of motion
• 1.a body at rest stays at rest, a body in motion stay in motion (straight line) unless outside force acts upon it.
• 2.F=ma
• 3.for every force there is an equal and opposite force.
2. (t/f) a body in translational equilibrium has a net force moving it at a constant velocity
false, a body at translational equilibrium has zero net force
3. formula for torque
torque=rFsin()
4. when calculating torque, what direction is positive, what is negative
counterclockwise is positive, clockwise is negative
5. formula for centripetal acceleration
a=v2/r
6. formula for centripetal force
F=ma or F=mv2/r
7. formula for work
• W=Fdcos()
• from pressure (isobaric process):
• W=P(Vf-Vi)
8. units for work and energy?
joule (kg-m2/s2)
9. formula for mechanical kinetic energy? gravitational potential energy?
KE=mv2/2

U=mgh
10. formula for momentum
p=mv
11. formula for impulse?
delta p or j=Ft=mv-mv0
12. formula for center of mass for m1 and m2 at x1 and x2
X=(m1x1+m2x2)/(m1+m2)
13. (t/f) kinetic energy is conserved in a completely elastic collision
true
14. (t/f) momentum is not conserved in a inelastic collision
false, momentum is conserved in both elastic and inelastic collisions
15. formula for heat gained and temperature change
• Q=mc(Tf-Ti)
• c-specific heat
16. what is heat of fusion
energy required for phase change from solid to liquid
17. formula for heat gained or lost during phase change
• Q=mL
• L-heat of transformation
18. formula for first law of thermodynamic
delta U=heat energy gained-work done by the system
19. 2nd law of thermodynamic
entropy of a closed system will either increase or remain unchanged
20. density of water
1000 kg/m3 or 1g/cm3
21. formula for pressure
P=F/A
22. formula for absolute pressure
P=surface pressure+density*gravity*depth
23. what is gauge pressure
pressure in excess to atmospheric pressure
24. formula for buoyant force
Fb=density*g*V
25. a pipe of varying cross sections, how do fluid velocity and cross section area related?
A1V1=A2V2
26. formula for Young's modulus
Y=stress/strain

• stress (F/A)
• strain (delta L/L)
27. Coulomb's law
F=kq1q2/r2
28. formula for electric field (E) at a distance (r) from a charge (q)
E=kq/r2
29. formula for force that a charge (q) experience in a electric field (E)
F=qE

since E=F/q
30. unit for electric field
Newton/Coulomb

or Volt/meter
 Author: Anonymous ID: 59679 Card Set: MCAT PHYSICS 1 Updated: 2011-01-14T01:28:39Z Folders: Description: studying to be a docnform Show Answers: