Homework 10.14.10

10/14/2010

Complete you activity and turn in activity manual for a quiz grade by no later than tomorrow.

Complete the worksheets for class on Tuesday and study for the test.  Remember the test is Tuesday.  Chapter 5

Force examples

10/12/2010

Force, Mass, Acceleration, Weight, Gravity

REMEMBER: A weight is a special case of force.

example 1: what is the mass of a 200. kg object?
200. kg

example 2: what is the weight of a 200. kg object?

weight = mass x gravity
200. kg x 9.8 m/s2 =
1960 kg m/s2 =
1960 newtons

example 3: what is the mass of a 200. newton object?
mass = weight / gravity
200. kg m /s2 / 9.8 m/s2 =
20.4 kg

example 4:  A little boy pushes a wagon with his dog in it. The mass of the dog and wagon together is 45 kg. The wagon accelerates at 0.85 m/s2. What force is the boy pulling with?

m = 45 kg
a = 0.85 m/s^2
F = ?
F = ma

F = (45 kg)(0.85 m/s^2)
F = 38.25 N

Homework 10.12.10

10/12/2010

review Chapter 5 and complete #24-26 in Chapter 5 Chapter Review

Homework 10.7.10

10/7/2010

Review the Chapter and complete the worksheet

Homework 10.6.10

10/6/2010

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Homework 10.5.10

10/6/2010

Read pp 113-117 and complete worksheet

Homework 10.4.10

10/1/2010

Read 108-112 and complete worksheet

Homework 10.1.10

10/1/2010

Read pp 104-108 and complete 5A section review

Class 8A- remember that your homework includes 10.1.10 and 10.2.10- please refer to Homework 10.2.10 for your other assignment