Physics 131 F15 HW3
Due Monday Sept 21 at 5pm
Problem 1 Giancoli 3.Q12
Answers may vary, here is one option. The child could lay the meterstick at on
the ground to nd a spot one meter away, and then stick the metersick in the
ground at that location point

Physics 131 F15 HW1
Due Friday Sept 18 at 5pm
Problem 1 Giancoli 2.16
a. x(t) = 2.0 3.6t + 1.1t2 , so
x(1.0 s) = 2.0 m 3.6
m
m
(1.0 s) + 1.1 2 (1.0 s)2 = 0.5 m
s
s
x(2.0 s) = 2.0 m 3.6
m
m
(2.0 s) + 1.1 2 (2.0 s)2 = 0.8 m
s
s
x(3.0 s) = 2.0 m 3.6
m
m
(3.0

Phys 131
Fall 2015
Quiz 1
Name:_
Start Time:_
End Time:_
= 0 + 0 +
= 0 +
1
2
2
2
2 = 0 + 2
=
Part 1: Multiple Choice (2 pts each)
1. What is the acceleration of a car that travels at a constant 20 m/s for 10 seconds?
a. 200 m/s2
b. 20 m/s2
c. 2 m/s