ISCI 2002 Ch 03_Newtons Laws of Motion.ppt - Module 3 Newtons Laws of Motion ISCI 2002 Barron This lecture will help you understand Newton's First Law

# ISCI 2002 Ch 03_Newtons Laws of Motion.ppt - Module 3...

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Module 3 “Newton’s Laws of Motion” ISCI 2002 Barron
This lecture will help you understand: Newton's First Law of Motion Newton's Second Law of Motion Forces and Interactions Newton's Third Law of Motion Vectors
Newton's First Law of Motion The law of inertia: Every object continues in a state of rest or of uniform speed in a straight line unless acted on by a nonzero force.
Newton's First Law of Motion CHECK YOUR UNDERSTANDING A sheet of paper can be quickly withdrawn from under a soft-drink can without the can toppling because A. gravity pulls harder on the can than on the paper. B. the can has weight. C. the can has inertia. D. none of the above
Newton's First Law of Motion CHECK YOUR ANSWER A sheet of paper can be quickly withdrawn from under a soft-drink can without the can toppling because A. gravity pulls harder on the can than on the paper. B. the can has weight. C. the can has inertia. D. none of the above
Newton's First Law of Motion CHECK YOUR UNDERSTANDING If you swing a stone overhead in a horizontal circle and the string breaks, the tendency of the stone is to follow a A. curved path. B. straight-line path. C. spiral path. D. vertical path.
Newton's First Law of Motion CHECK YOUR ANSWER If you swing a stone overhead in a horizontal circle and the string breaks, the tendency of the stone is to follow a A. curved path. B. straight-line path. C. spiral path. D. vertical path.
Newton's Second Law of Motion The law of acceleration: The acceleration produced by a net force on an object is directly proportional to the net force, is in the same direction as the net force, and is inversely proportional to the mass of the object.
Acceleration     net   force mass a     F m Newton's Second Law of Motion Equation for acceleration: Small net force, large mass small acceleration Large net force, small mass large acceleration
Newton's Second Law of Motion CHECK YOUR UNDERSTANDING Consider a cart pushed along a track with a certain force. If the force remains the same while the mass of the cart decreases to half, the acceleration of the cart will A. remain the same. B. halve. C. double. D. change unpredictably.
Newton's Second Law of Motion CHECK YOUR ANSWER Consider a cart pushed along a track with a certain force. If the force remains the same while the mass of the cart decreases to half, the acceleration of the cart will A. remain the same. B. halve. C. double. D. change unpredictably.
Newton's Second Law of Motion CHECK YOUR UNDERSTANDING Push a cart along a track so that twice as much net force acts on it. If the acceleration remains the same, what is a reasonable explanation? A. The mass of the cart doubles when the force is doubled. B. The cart experiences a force that it didn't before.

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• Spring '14
• AnnM.Robinson