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Physics Final Review
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Fire a rifle horizontally and drop a bullet at the same time
Fire a rifle horizontally and drop a bullet at the same time. Which hits the ground first? the bullet you fired the bullet you dropped they hit the ground at the same time
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For a receiver to catch a football at chest level, the quarterback must aim the football _____ .
above at the receiver’s chest below the receiver’s chest directly at the receiver’s chest
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How far does an object in uniform circular motion travel during one period?
v2/r
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What formula can be used to calculate centripetal force? F = mg
F = -kx Fc = mv2/r
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What centripetal force keeps the moon in orbit around the earth?
elastic force gravitational force electric force
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Who first calculated the mass of the earth? Albert Einstein
Isaac Newton Henry Cavendish
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Which is NOT a universal constant?
K g G
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As you get closer to sea level,
g increases. g decreases.
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Where is g the greatest? on the moon on the earth on Jupiter
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A gravitational field surrounds anything that has _____. mass
velocity electricity
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Which is true about electric charge? It can be transferred.
It can only attract. It can be created or destroyed.
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Which force is the strongest?
gravitational force electric force
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An object in uniform circular motion has an acceleration that is_____.
toward the center of the circle away from the center of the circle in a direction tangential to the circle
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The horizontal and vertical components of a projectile’s velocity are ____.
independent of each other inversely proportional directly proportional equal
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The horizontal acceleration of a projectile after it is fired is _____.
constant 9.8 m/s2 zero
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The vertical acceleration of a projectile after it is fired is _____.
-9.8 m/s2 zero
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Neglecting air resistance, the initial horizontal velocity of a projectile is _____ its final horizontal velocity. greater than less than equal to
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What formula can be used to find the tangential velocity of an object in uniform circular motion?
Fc = mv2 r vf = vi + at a = v t
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The velocity vector for an object in uniform circular motion is _____?
pointed toward the center of the circle pointed away from the center of the circle tangent to the circle
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The linear momentum of an object is equal to mass times ______. time
impulse acceleration velocity
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Moment of inertia depends on: linear momentum
how fast an object is rotating how far an object’s mass is from the axis of rotation.
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True or False: Angular momentum depends on linear velocity. true
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An airbag is effective because it decreases the amount of force by _____.
increasing the time interval over which it acts decreasing the time interval over which it acts. reducing the time interval over which it acts to zero.
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True or False: Angular momentum depends on which direction something is spinning.
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True or False: Angular momentum depends on how fast something is spinning.
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A gymnast dismounting from the balance beam has a greater angular velocity in the ______.
tuck position fully extended position
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What formula can be used to find impulse?
pf - pi p = mv P = W/t
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True or False: Angular momentum depends on an object’s moment of inertia.
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The smallest change in momentum will be produced by a ______.
small force acting over a long time small force acting over a short time large force acting over a short time
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Marble A has twice the mass of marble B. Marble A hits marble B
Marble A has twice the mass of marble B. Marble A hits marble B. The force marble A exerts on marble B ____ compared to the force of marble B on marble A. is equal in magnitude and opposite in direction is equal in magnitude and direction is not equal in magnitude
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Mechanical energy is the sum of______.
elastic and inelastic potential energy kinetic and potential energy
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A tennis ball and a ping pong ball are both shot from a slingshot with equal speed. Which object has the least kinetic energy? the tennis ball the ping pong ball
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What are the units of power?
newtons joules watts
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Work is done on an object when a constant force is exerted on the object causing the object to be displaced _____. perpendicular to the force opposite the direction of force in the direction of force at an angle to the force
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Which formula can you use to find the potential energy stored in a spring?
PE = mgh P = W/t PE = ½ k x2
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What are the units of work?
watt newton pound joule
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In which of the following situations is work done by a bowling ball by gravity?
picking up the bowling ball carrying the bowling ball to the lane dropping the ball
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Rotational kinetic energy depends on an object’s ______.
moment of inertia linear velocity resonance
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The energy in a stretched rubber band is _____.
elastic potential energy inelastic potential energy elastic kinetic energy inelastic kinetic energy
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The shortest distance between two points where the wave pattern repeats is the _____.
amplitude wavelength frequency period
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The speed of a wave is equal to_____ times wavelength. amplitude
frequency period
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This wave behavior occurs when two or more waves move through a medium at the same time.
refraction resonance reflection interference
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A wave carries _____ through space. energy matter
both energy and matter
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A ______ wave travels in a direction parallel to its displacement?
transverse longitudinal
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The bending of waves at the boundary of two different media is
diffraction incidence refraction reflection
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Which type of electromagnetic waves has the greatest frequency and energy?
infrared radio gamma x-rays
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Which type of electromagnetic waves has the least frequency and energy?
infrared radio gamma x-rays
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True or False: Frequency is directly proportional to period. true
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Which of the following converts light energy to electric energy?
galvanic cell solar cell photosynthesis
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Likes repel and opposites attract is which law?
law of conservation of charge law of charges law of conservation of energy
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The electric force between two charges is _____ to the square of the distance between them?
directly proportional inversely proportional
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Charging a neutral object by touching it with a charged body is called _____.
charging by induction charging by conduction
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All electric charges are multiples of the charge on an _____.
electron atom
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Good luck on the final!
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