Motion
the change of position of an object
What is displacement?
The term for an object whose sole force acting is gravity
What is freefall?
The force due to gravity of an object.
What is weight?
This universal force attracts every object to every other object in the universe, credited to Newton.
What is gravity?
stored energy
What is potential energy?
change of position per unit time
What is velocity?
the speed of an object that begins from rest and accelerates at 3 m/s2 for 5 seconds.
What is 15 m/s
the support force exerted by a surface, acting perpendicular to that surface, preventing an object from passing through it, and it counteracts other forces like gravity
What is normal force?
Gravity's strength depends on two factors: the mass of the objects and this other measurement between them.
What is distance?
energy of motion
What is kinetic energy?
change of velocity per unit time
What is acceleration?
The displacement of an object that begins from rest and accelerates at 5m/s2 for 4s.
What is 40m
A 2-kg object is moving horizontally with a speed of 4 m/s. This is the net force is required to keep the object moving at this speed and in this direction.
What is 0 N.
This equation describes the mathematical relationship between mass, distance, and the gravitational force between two bodies.
What is F=G(m1m2)/r^2?
the change in energy per unit time
What is power?
The motion of an object with no acceleration
What is constant velocity?
The initial vertical velocity of a horizontally launched object.
What is zero?
This is the a 5 kg box's final velocity after it travels 10 meters, starting from rest and is pulled across a frictionless floor by a horizontal force of 20 N.
What is 8.94 m/s?
A larger mass means more gravitational pull; a greater distance means less pull—this relationship is called being proportional and inversely proportional, respectively.
What is proportional to mass and inversely proportional to the square of the distance?
The velocity of a 10 kg object dropped 16.2m. use g = 9.8 m/s2
What is 17.8 m/s?
the motion of an object that is moving forward with a negative acceleration
What is slowing down?
The initial horizontal velocity of an object launched at 30 degrees with a speed of 40m/s
What is 34.6m/s
The apparent weight of a 50kg object in an elevator that is accelerating 2m/s2 upward. (Hint: use g = 10m/s2)
What is 600N
If you double the distance between two objects, the gravitational force between them becomes this fraction of the original force.
What is one-fourth (or 1/4)?
The average velocity of an object with a moving kinetic energy of 2160J and has a mass of 120kg.
What is 6 m/s