Exam 1

  • Due Oct 6, 2022 at 11:59pm
  • Points 30
  • Questions 31
  • Available Oct 5, 2022 at 7am - Oct 6, 2022 at 11:59pm
  • Time Limit 120 Minutes

Instructions

You can refer to the following formulae at any time. 

Newton’s First Law (“Law of Inertia”): If F = 0, then v is constant
Newton’s Second Law: F = ma
Newton’s Third Law: “action = reaction”, “forces come in pairs”

Linear (translational) motion:
distance traveled = d = (average speed) x time
total displacement = d = (average velocity) x time
vf = v0 + at
d = v0t + 0.5at2
work done = force x (distance moved in the direction of the force)
power = energy / time
kinetic energy = 0.5 mv2
gravitational potential energy = mgh

Rotational motion:
motion in a circle: arc length d = rθ,  centripetal acceleration a = v2/r

Gravity:
Newton’s law of gravity: F = Gm1m2/r2
Take the acceleration due to gravity near the Earth's surface to be g = 10 m/s2

Trigonometry:
sin 450 = cos 450 = 1/√2 = 0.71
sin 300 = cos 600 = 0.5,  cos 300 = sin 600 = (√3)/2 = 0.866
sin 370 = 0.6,  cos 370 = 0.8

 

 

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