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A person is pushing on a 327-pound rock. What frictional force must he overcome to get the rock moving? (µs = 0.32, µk = 0.20)
Every action has an equal and opposite reaction
Greater Than
weight
101.25 lbs
104.64 N
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
mass
F=ma
6. For a given object and surface, is the coefficient of static friction (µs) greater than or less than the coefficient of kinetic friction (µk)?
Every action has an equal and opposite reaction
Greater Than
weight
101.25 lbs
104.64 N
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
mass
F=ma
3. You find a measurement of 20 Newtons written in a laboratory notebook. Is this a measurement of weight or mass?
Every action has an equal and opposite reaction
Greater Than
weight
101.25 lbs
104.64 N
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
mass
F=ma
While driving down a country road, a man has to stop because a 225-pound rock has fallen off of a hill and has landed in the middle of the road (μs = 0.45, μk=0.32). What is the frictional force the man must overcome to get the rock moving?
Every action has an equal and opposite reaction
Greater Than
weight
101.25 lbs
104.64 N
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
mass
F=ma
What is Newton's 2nd law?
Every action has an equal and opposite reaction
Greater Than
weight
101.25 lbs
104.64 N
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
mass
F=ma
3. You find a measurement of 22 kg written in a laboratory notebook. Is this a measurement of weight or mass?
Every action has an equal and opposite reaction
Greater Than
weight
101.25 lbs
104.64 N
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
mass
F=ma
What is Newton's 3rd law?
Every action has an equal and opposite reaction
Greater Than
weight
101.25 lbs
104.64 N
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
mass
F=ma
What is Newton's first Law?
Every action has an equal and opposite reaction
Greater Than
weight
101.25 lbs
104.64 N
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
mass
F=ma
Check it!