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As an object falls freely in a vacuum (w/o air resistance) its 

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In the absence of air resistance, the objects fall at a constant 

Definition


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A ball is thrown up and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would be 

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the same as the speed when first released 


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Suppose an object is in free fall. Each second the object falls 

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a larger distance than the in the second before. 


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If you have drop a feather and coin in an airfilled tube, which hits the ground first? 

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When a basketball player jumps to make a shot, once his feet are off the ground, the jumper’s acceleration… 

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A ball is thrown straight up. The top of its path, the instantaneous speed is 

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When something falls it accelerates. The acceleration is called the acceleration due to gravity and is symbolized by “g” and it is… 

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If a free falling object were equipt with a speedometer, its speed reading would increase by about ___ seconds 

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If a ball were equipt with a speedometer on a planet where the acceleration due to gravity is 23 m/s, the reading on the speedometer would increase each second by 

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A freely falling object starts from rest and after falling for 6 seconds it will have a speed of about 

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If you drop a feather and a coin in a vacuum tube which will reach the bottom first? 

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neither they will land at the same time 


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When you drop an object you can assume that the _________ of the object is zero when using kinematics equations. 

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Acceleration is defined as a a change in 

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Suppose that a car changes from 35 m/s to 40 m/s in one second and from 40m/s to 45 m/s in the second second… what is the accleration 

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the horizontal component of a projectile’s velocity is independent of 

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a ball is launched horizontally in and hits the ground in .8 seconds. If it had been launched with a much higher speed in the same direction, it would have hit the ground in… 

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The time the projectile is in the air is called 

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In the absence of air friction, the horizontal component of a projectile’s velocity doesnt change as the projectile moves Sometimes, Always, or Never true? 

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A cannonball is launched from the ground at an angle of 30 degrees above the horizontal and a speed of 30 m/s. Ideally (no air resistance) the ball will land on the ground with a speed of 

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In the absence of air friction, the vertical component of a projectile’s velocity doesnt change as the projectile moves
sometimes, always, or never true? 

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What is an example of something that is not a projectile? 

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a cannonball rolling down a hill 


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What angle produces the same distance as 75 degrees? 

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the highest position the projectile reaches is known as its 

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A ball is thrown up into the air and at the top the velocity is entirely 

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Term
At the instant a ball is thrown horizontally, another ball is dropped at the same height. Which ball hits the ground first? 

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A cannonball is launched horizontally from a tower. If the cannonball has a velocity of 60 m/s, where will it be in 1 second 

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at what angle will the projectile go the furthest? 

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At what part of the path does a projectile have a minimum speed? 

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the horizontal distance a projectile travels is also known as its 

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If a projectile is launched at an angle the shape of its trajectory will look like a 

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The law of inertia state that an object 

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will continue moving unless acted upon will continue moving in a straight line unless acted upon will be at rest unless acted upon 


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the law of inertia applies 

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to nonmoving and moving objects 


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a sheet of paper wont topple a container of milk because the milk carton has 

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One object has twice as much mass as another and the first object also has twice as much 

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Compared to its weight on earth, the WEIGHT of a 10 kg object on the moon will be 

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Compared to its weight on earth, the MASS of a 10 kg object on the moon will be 

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the mass of a sheep that weighs 110N is (? kg) 

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An object following a straightline path at a constant path at a constant speed has ___ acceleration 

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A girl whose weight is 500 N hangs from the middle of a bar supported by two vertical strands of rope. What is the tension in each strand? 

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Friction Force is a force that always acts 

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opposite to an object’s motion 


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Which has more mass a kg of feathers or a kg of iron 

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An object on Earth is 30 N and an object on the moon is 30 N. Which has the greater mass? 

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When an object reaches terminal velocity, its acceleration is 

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Suppose a force of friction of an object on a level surface is 25 N. The applied force needed to accelerate the object should be 

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A book weighs 4. When held at rest in your hands, the net force on the book is 

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An apple weighs 1 N. The Net Force (total force) on the apple when it is in free fall is 

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If you pull horizontally on a desk with a force of 250 N causing the desk to move at a constant velocity, the friction force must be 

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Term
A Net Force on a cart doubles, what happens to its acceleration? 

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