A force can ..., change an object's mass, change an object's speed, Why must you hold the handrail?, I fall when bus brakes., I don't., Why must you wear seatbelts?, For funsies, To prevent fatal injury., A stationary object, has no force, has balanced forces, A ball rolling on frictionless surface, rolls on forever., stops after a while., A ball rolling on a rough surface, rolls on forever., stops after a while., How do people stay afloat?, Magnetic force, Blasting force from air tunnel, Vector addition, 20 N to the right, 0 N.

Leaderboard

Visual style

Options

Switch template

)
Continue editing: ?