newton’s laws of motion force & acceleration. learning objectives analyze relationships...
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Newton’s Laws of MotionForce & Acceleration
Learning Objectives• Analyze relationships between forces and
motion• Calculate the effects of forces on objects
Newton’s Laws of Motion
• Newton’s second law of motion – states that the acceleration (a) of an object is directly related to the net force on the object (Fnet) and inversely related to the mass of the object (m)
• Units of newtons can be broken down using Newton’s second law
Force & Acceleration
Force & Acceleration Example
Ex) A 91 N force causes an object to accelerate at 0.76 m/s2. What is the mass of the object?
IV. Conversions needed?
V. Intermediates needed?
VI. Solve
VII. Does the result make sense?
I. StrategyII. Given and unknown
III. Formula
so
No.
No.
Yes.
Force & Acceleration Example
Ex) A 250 N net force is applied to a 72 kg object. What is the acceleration of the object?
IV. Conversions needed?
V. Intermediates needed?
VI. Solve
VII. Does the result make sense?
I. StrategyII. Given and unknown
III. Formula
so
No.
No.
Yes.
Force & Acceleration Example
Ex) A 5.0 kg object is traveling at a constant velocity of 3.2 m/s. What is the net force acting on the object?
IV. Conversions needed?
V. Intermediates needed?
VI. Solve
VII. Does the result make sense?
I. StrategyII. Given and unknown
III. Formula
No.
No.
Yes.
Learning Objectives• Analyze relationships between forces and
motion• Calculate the effects of forces on objects
Newton’s Laws of Motion