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