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