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p.p. questions 1-4
|What is the sum of all forces acting on an object?
|What happens to an object when the sum of the forces is zero?
|it is in equilibrium
|What is acceleration proportional to? a.gravity b.force c.net force
|What is another thing acceleration is proportional to? a.force b.gravity c.Mass
|In Newton's Second Law what is acceleration equal to? a.net force over mass b.force over mass c.mass over net force
|a.net force over mass
|What happens when the force is doubled on the same mass? a.the net force doubles b.the number of newton's double c.the acceleration doubles
|c.the acceleration doubles
|Which of the following is not a factor of friction? a.always opposes motion b.no change in motion c.caused by irregularities in the surfaces
|b.no change in motion
|What is it called when an object pushes aside the fluid it is moving through? a.fluid friction b.solid friction c.gravitational friction