ISP209s7 Lecture 10
-1-
Today
• Announcements:
– The average on the first exam was 31/40
– Exam extra credit is due by 8:00 am Wednesday
February 13th.
– The second homework extra credit is due by
Wednesday February 13th.
• F=ma
•
Electric Force
•
Work, Energy and Power

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ISP209s7 Lecture 10
-2-
Newton’s Second Law of Force
F=ma
• Force is equal to mass times acceleration.
• For a given force, the amount of acceleration is
inversely proportional to the mass.
• Force causes acceleration.
• If you observe acceleration, there must be a force
acting.
An equation is worth greater than half the words of a picture.