Name: Curt Blimline
Contact Info: blimline_c@burgschools.org
Unit Title: Zip Line Physics
Unit #:
4
Activity Title: Pre Post Assessment
Lesson #:
0
Date:24-Jun-13
Activity #:
0
Worksheet:
a
Worksheet Title: Assessment for Zip Line Physics
Name___________________________________
Answer the following questions by showing your work in the space provided.
Question
1
2
Name the force that opposes motion
of a stationary object. (2 pts)
Sketch a free body diagram of a car
travelling at constant speed on a level
highway. (3 pts)
3
Sketch a free body diagram of a car
rolling down a hill. (3 pts)
4
Sketch a free body diagram of a car
rolling up a hill. (3 pts)
1
Pre Assessment Answer
Post Assessment Answer
5
The weight of a book on an inclined
plane can be resolved into two vector
components, one along the plane, and
the other perpendicular to it. (3 pts)
a. At what angle are the
components equal?
b. At what angle is the parallel
component equal to zero?
c. At what angle is the parallel
component equal to the
weight?
6
A 500-N box is resting on a plane
inclined 30.0° above the horizontal.
Find the components of the weight
force parallel and perpendicular to the
plane. (2 pts)
7
What is the force of friction on the box
in question 6? (2 pts)
8
Find the coefficient of static friction
between the box and the inclined
plane in question 6. (2 pts)
9
For a block on a sloping table, describe
what happens to the component of
the weight force parallel to the table
and the force of friction on the block
as you increase the angle that the
table makes with the horizontal.
(2 pts)
A 60-kg person on a snowboard is
going down a hill sloped at 40.0°. The
coefficient of kinetic friction between
the snowboard and the snow is 0.20.
How fast is the skier going 10.0 s after
starting from rest? (3 pts)
10
2
11
List the steps in an engineering design
process. (4 pts)
3