+y
Quiz 09.11.12
B
=75
X
=20
Ax
A
C
=45
y
5m / s(cos 45)
Ay
3.53m / s
+x
Bx
3.53m / s
10m / s(sin 75)
By
9.66m / s
D
A 5m / s @ 45
B 10m / s @ 165
C 15m / s @ 290
D
1.0m / si 7.98m / s
j
| D | 8.04m /
Quiz 09.13
A cannon is fired at an angle of 20 above horizontal. It has an initial velocity in the x
direction (NOT total velocity) of 20 m/s. Is the city shown in the picture below safe
from this das
Quiz 09.11.12
To the left, we have the vectors A + B
+ C = D shown. Given the values and
angles listed below for the vectors,
find the resultant vector (D) and list
the vector D in unit vector notatio
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Quiz 09.04.12 - Answer
Convert the speed 50 miles/week to m/s. This is roughly how fast the early
European settlers were traveling when they moved across the Midwest.
miles 1609m 1week 1day 1hr
50
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Set Up: A machine lifts a box on Earth from the ground to a height of 100 m. This
box has a mass of 10 kg. Previously we calculated the work done on the box by the
machine to be W = mgh = (10 kg)(9.8
Question: What are the fundamental units (meters, kilograms, seconds) of the
gravitational constant G? (F = GMm/R2)
Answer: Given the fact that G is related to Force by the equation above, we can solv
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Quiz 8.30.12
Convert 670,616,629 mph to m/s (remember that mph is miles per hour).
You are given the conversion 1.609 km = 1 mile. Write your answer in
scientific notation with a reasonable amount of
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