Physics Final Review
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
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
How far does an object in uniform circular motion travel during one period? v2/r
What formula can be used to calculate centripetal force? F = mg F = -kx Fc = mv2/r
What centripetal force keeps the moon in orbit around the earth? elastic force gravitational force electric force
Who first calculated the mass of the earth? Albert Einstein Isaac Newton Henry Cavendish
Which is NOT a universal constant? K g G
As you get closer to sea level, g increases. g decreases.
Where is g the greatest? on the moon on the earth on Jupiter
A gravitational field surrounds anything that has _____. mass velocity electricity
Which is true about electric charge? It can be transferred. It can only attract. It can be created or destroyed.
Which force is the strongest? gravitational force electric force
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
The horizontal and vertical components of a projectile’s velocity are ____. independent of each other inversely proportional directly proportional equal
The horizontal acceleration of a projectile after it is fired is _____. constant 9.8 m/s2 zero
The vertical acceleration of a projectile after it is fired is _____. -9.8 m/s2 zero
Neglecting air resistance, the initial horizontal velocity of a projectile is _____ its final horizontal velocity. greater than less than equal to
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
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
The linear momentum of an object is equal to mass times ______. time impulse acceleration velocity
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.
True or False: Angular momentum depends on linear velocity. true
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.
True or False: Angular momentum depends on which direction something is spinning.
True or False: Angular momentum depends on how fast something is spinning.
A gymnast dismounting from the balance beam has a greater angular velocity in the ______. tuck position fully extended position
What formula can be used to find impulse? pf - pi p = mv P = W/t
True or False: Angular momentum depends on an object’s moment of inertia.
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
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
Mechanical energy is the sum of______. elastic and inelastic potential energy kinetic and potential energy
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
What are the units of power? newtons joules watts
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
Which formula can you use to find the potential energy stored in a spring? PE = mgh P = W/t PE = ½ k x2
What are the units of work? watt newton pound joule
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
Rotational kinetic energy depends on an object’s ______. moment of inertia linear velocity resonance
The energy in a stretched rubber band is _____. elastic potential energy inelastic potential energy elastic kinetic energy inelastic kinetic energy
The shortest distance between two points where the wave pattern repeats is the _____. amplitude wavelength frequency period
The speed of a wave is equal to_____ times wavelength. amplitude frequency period
This wave behavior occurs when two or more waves move through a medium at the same time. refraction resonance reflection interference
A wave carries _____ through space. energy matter both energy and matter
A ______ wave travels in a direction parallel to its displacement? transverse longitudinal
The bending of waves at the boundary of two different media is diffraction incidence refraction reflection
Which type of electromagnetic waves has the greatest frequency and energy? infrared radio gamma x-rays
Which type of electromagnetic waves has the least frequency and energy? infrared radio gamma x-rays
True or False: Frequency is directly proportional to period. true
Which of the following converts light energy to electric energy? galvanic cell solar cell photosynthesis
Likes repel and opposites attract is which law? law of conservation of charge law of charges law of conservation of energy
The electric force between two charges is _____ to the square of the distance between them? directly proportional inversely proportional
Charging a neutral object by touching it with a charged body is called _____. charging by induction charging by conduction
All electric charges are multiples of the charge on an _____. electron atom
Good luck on the final!