A) friction B) gravitation C) work D) force E) magnetism
A) gravitation B) force C) friction D) work E) magnetism
A) gravitation B) friction C) force D) magnetism E) work
A) work B) magnetism C) unbalanced forces D) force E) balanced forces
A) power B) net force C) force D) work E) gravitation
A) power B) friction C) net force D) force E) work
A) unbalanced forces B) friction C) work D) balanced forces E) power
A) newton B) friction C) gravity D) magnetism
A) an outside force acts on it B) a nearby star acts on it C) it continues in a straight line D) it is placed on a flat surface
A) a movement in all directions B) an equal and opposite reaction C) a greater force pushing on it D) a force sending it backward
A) Its position changes B) its momentum changes C) its frame of reference changes D) its mass and velocity changes
A) The movement of objects on Earth and in space B) the relationship between the four basic elements C) how frame of reference influences movement D) Why all moving objects eventually stop moving
A) the ground pushes against your feet when you run B) People in a car move forward in their seats when the car stops quickly C) friction can be overcome for all objects D) gravitational forces are stronger on Earth than on the moon or other satellites
A) orbit B) reaction force C) inertia D) law of universal gravitation
A) Law of Gravitation B) reaction force C) orbit D) inertia E) action force
A) inertia B) orbit C) Reaction force D) action force
A) acceleration B) position C) speed D) momentum E) velocity
A) acceleration of that object B) position of that object C) velocity of that object D) momentum of that object E) the speed of that object
A) velocity B) momentum C) acceleration D) speed E) position
A) momentum B) speed C) acceleration D) velocity E) position
A) a pole can be knocked down when a moving car hits it B) trucks slow down when they are travelling uphill C) a ball thrown into the air always falls back toward Earth D) a spacecraft can travel in space for thousands of years
A) a pulley and a screw B) A screw and a wedge C) a wedge and a pulley D) a lever and a wedge
A) friction B) a machine C) speed D) a magnet
A) a power B) a force C) a current D) a machine
A) friction B) force C) work D) magnetism E) power |