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Chapter 5 Motion in Two Dimensions
  Here is your chance to apply what you've learned in this chapter.

We studied motion in two dimensions. We learned how to break down two dimensional forces into x and y directions. We also know how to generate a force from two (or more) forces. We also dealt with forces involving gravity.

You can use the formula sheet if you need some help.

Animation of a sheet of paper and a pencilA sheet of paper and a pencil may be useful.


 

Chapter 5 Quiz

1. A dog walks 1 km due east, then 300 m north, and finally 500 m west. What is the resulting displacement of the dog?

(e.g. "100.0 m NE")

2. Three students push a box. Michael pushes with a force of 200 N at 0 degree. Shannon exerts a force of 150 N at 30 degrees, and Adam pushes with 175 N at 145 degrees. What is the magnitude of the net force?

N

3. A 10 kg picture is hanging on a wall by two ropes.

a. How big is the force exerted by the block above?

N

b. Are the forces acting on the ropes A and B equal in magnitude?

(Yes/No)

c. How big is the force acting on the rope A?

N

4. The roof on a house is at 10 degrees inclined. A 50 kg box is on the roof.

a. What is the magnitude of the force of gravity on the box?

N

b. What is the force of normal acting on the box?

N

c. What will the acceleration of the box be if there is no friction?

m/s2

d. If the coefficient of friction between the box and the roof is 0.15, will the box move?

(Yes/No)

e. If so, how fast?

m/s2

5. A 3 kg block slides down a 30 degree inclined plane with constant acceleration of 0.5 m/s2. The block starts from rest at the top. The length of the incline is 2 m.

a. What is the velocity of the block at the bottom?

m/s

b. What is the magnitude of the force of normal on the block?

N

c. What is the coefficient of friction between the plane and the block?

Press the button to check your answer:


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