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Mastery Check 3-9 (a)

Last updated 3 months ago

7 questions

1

Question 1

1.

Mastery checks are pledged activities. You may ONLY use: a calculator. No assistance from notes, friends, the internet, etc.
You may write "I pledge" and sign your name here.

1

1

Question 2

2.

Which of the following is true about your net force if you are in an elevator accelerating downwards?

Your net force points upwards

Your net force points downwards

Your net force is zero

Question 3

3.

Which of the following is true about the forces acting on you if you are in an elevator accelerating downwards?

Fn > Fg

Fn = Fg

Fn < Fg

A 55 kg woman is standing in an elevator. 

2

Question 4

4.

Before the elevator starts moving, her normal force (Fn) and weight (Fg) are equal.

True

False

2

2

2

Question 5

5.

What is the force of gravity pulling down on the woman?

Show your work (use the calculation rubric)

Question 6

6.

The elevator then starts accelerating at 0.7 m/s2 upwards. What is the net force acting on the woman?

Show your work (use the calculation rubric)

Question 7

7.

Therefore, what is the normal force acting on the woman as the elevator accelerates upwards?