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ch.6 powerpoint
p.p. questions 1-4
Question | Answer |
---|---|
What is the sum of all forces acting on an object? | Net force |
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 | b.force |
What is another thing acceleration is proportional to? a.force b.gravity c.Mass | 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 | a.fluid friction |