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