PhysSept21

# PhysSept21 - motion with a force of 2,000 N. The truck...

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September 20 Physics

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In: Draw a free body diagram of a bike moving at a constant speed.
Objective: To build an understanding of Newton’s 3 laws Success Criteria: Can draw a free body diagram and apply Newton’s laws to it.

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Newton’s first law: Law of inertia, Equilibrium Objects at rest stay at rest, objects in motion stay in motion unless acted upon by an outside force.

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Equilibrium (Newton’s 1 st ) Object is at rest or moving at a constant velocity Net force = 0
Newton’s second law: F=ma

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F=ma A car with a mass of 1500 kg accelerates at 3 m/s/s. What is the net force on the car?
F=ma A semi-truck’s engine pushes it forward with a force of 10,000 N. Friction resists it’s

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Unformatted text preview: motion with a force of 2,000 N. The truck accelerates at 2 m/s/s. What is the mass of the truck? F= ma A cheetah exerts a force of 600 N while running. If the cheetah has a mass of 30 kg, what is its acceleration? Weight=Force of gravity F g =mg What is the force of gravity of a 20 kg stack of books? Normal Force The force perpendicular to the surface. What is the normal force of the table on the stack of books? Out: A boat is sailing through the water with a force of 1250 N from the propeller and a mass of 300 kg. There is a resistance force of 650 N from the water. What is the acceleration of the boat?...
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## This note was uploaded on 11/18/2011 for the course PHYS 121 taught by Professor Burgeson during the Fall '11 term at BYU.

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PhysSept21 - motion with a force of 2,000 N. The truck...

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