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.

A 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/s^{2}

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/s^{2}

5. A 3 kg block slides down a 30
degree inclined plane with constant acceleration of
0.5 m/s^{2}. 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?