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17 Cards in this Set
- Front
- Back
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what is the difference between distance and isplacement?
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displacement is the measurement of final place minus initial postion. distance is the total distance traveled.
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formula for average velocity is
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displacement/time
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the motion of an object with constant velocity will provide a _______ graph
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straight-lined
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how do you find instantaneous velocity?
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pick a line tangent to a point in the curve and find the slope
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acceleration formula
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change in velocity over change in time
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for an object moving with constant acceleration the average velocity is what
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final + initial/2
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what is the formula for displacement with constant acceleration
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1/2(final velocity + initial velocity)(time interval)
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what is the acceleration during free fall?
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gravity 9.81m/s2
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what is a negative vector
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same magnitude opposite direction
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multiplying or dividing vectors by scalars results in
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vectors
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what do you do first to solve projectile motion problems?
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solve for x and y components
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one newton equals
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kg*m/s2
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newtons first law
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inertia - object in motion will remain in motion or an object at rest will remain at rest unless acted upon by a net external force
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newtons second law
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acceleration is directly proportional to the net force acting on the object and inversely proportional to the object's mass
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newtons third law
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force = mass times acceleration
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diff between static and kinetic friction
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static is when you have to push harder to break the interlockings of particles to get the object to start moving. kinetic is when it is moving
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force of friction equals
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f=un coefficient of friction times normal force
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