A) work B) friction C) force D) magnetism E) gravitation
A) work B) gravitation C) force D) friction E) magnetism
A) force B) magnetism C) friction D) work E) gravitation
A) magnetism B) unbalanced forces C) work D) force E) balanced forces
A) force B) gravitation C) net force D) work E) power
A) force B) friction C) net force D) work E) power
A) unbalanced forces B) friction C) power D) balanced forces E) work
A) gravity B) friction C) magnetism D) newton
A) an outside force acts on it B) it is placed on a flat surface C) it continues in a straight line D) a nearby star acts on it
A) a force sending it backward B) an equal and opposite reaction C) a movement in all directions D) a greater force pushing on it
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) 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) friction can be overcome for all objects 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) inertia B) law of universal gravitation C) reaction force D) orbit
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) momentum B) speed C) velocity D) position E) acceleration
A) momentum of that object B) acceleration of that object C) the speed of that object D) velocity of that object E) position of that object
A) acceleration B) momentum C) speed D) position E) velocity
A) acceleration B) speed C) momentum D) velocity E) position
A) trucks slow down when they are travelling uphill B) a pole can be knocked down when a moving car hits it 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) speed B) friction C) a magnet D) a machine
A) a force B) a current C) a machine D) a power
A) power B) force C) magnetism D) work E) friction |