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The acceleration of an object directly relates with the ____ of the object.
velocity
mass
force
weight
When a force of F is applied to an object with a mass of M it causes an acceleration of A. If the applied force is doubled (2F) what is the acceleration?
2A (double)
When a force of F is applied to an object with a mass of M it causes an acceleration of A. If the same force is applied to an object with a mass of 4M, what is the acceleration?
A/4
What is the acceleration in all free fall (vertical kinematics) problems?
gravity (-9.8 m/s/s)
When an object is thrown up in the air what is its acceleration?
gravity (-9.8 m/s/s)
When an object is dropped what is the initial velocity?
0 m/s
When an object is thrown up into the air what is the velocity at the highest point (peak of the parabola)?
0 m/s
What does the slope of a displacement (position) v. time graph tell you?
velocity
What does the slope of a velocity v. time graph tell you?
acceleration
Are acceleration and mass of an object directly or inversely related? (hint: F=ma)
inversely
T/F: When a model rocket is launched into the air and then falls back down to Earth the acceleration is changing?
False; the acceleration is gravity (-9.8 m/s/s) the entire time
T/F: If the acceleration is zero the object must be at rest.
False: an object can be moving with any constant velocity not necessarily 0 m/s
What must be true about acceleration and velocity if an object is slowing down?
acceleration and velocity must be in opposite directions
What must be true about acceleration and velocity if an object is speeding up?
acceleration and velocity must be in the same direction
T/F: If an object has a velocity of -3 m/s it must be slowing down.
False; -3 tells us the object is moving in the negative direction (left) we know nothing about whether it is speeding up or slowing down bc we do not know a
T/F: An object's acceleration is ALWAYS in the same direction as the net force.
True
