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gaitons
Set 1, Due Fri, Jan 18, 2008 at 23:59
1.
1
. [1 point, 10 tries]
Larry leaves home at 4:03 and runs at a constant speed to the lamppost. He reaches the lamppost at 4:11,
immediately turns, and runs to the tree. Larry arrives at the tree at 4:26. What is Larry's average velocity
during his trip from home to the lamppost, if the lamppost is 387.0 m west of home, and the tree is
611.0 m east of home?
Answer:
4.84e+01 m/min
2.
2
. [1 point, 10 tries]
What is the average velocity for Larry's entire run?
Answer:
2.66e+01 m/min
3.
3
. [1 point, 10 tries]
The velocity graph of a particle moving along the xaxis is shown. The particle has zero velocity at
t
=0.00 s and reaches a maximum velocity,
v
max
, after a total elapsed time,
t
total
. If the initial position of the
particle is
x
0
=8.84 m, the maximum velocity of the particle is
v
max
=13.7 m/s, and the total elapsed time is
t
total
=16.9 s, what is the particle's position at
t
=11.3 s?
Answer:
6.06e+01 m
4.
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. [1 point, 10 tries]
At
t
=11.3 s, what is the particle's velocity?
Answer:
9.16e+00 m/s
5.
5
. [1 point, 10 tries]
At
t
=11.3 s, what is the particle's acceleration?
Answer:
8.11e01 m/s^2
6.
6
. [1 point, 10 tries]
A rock is tossed straight up with a velocity of 39.7 m/s. When it returns, it falls into a hole 19.8 m deep.
What is the rock's velocity as it hits the bottom of the hole?
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This note was uploaded on 07/23/2008 for the course SCIENCE PHYSICS 1B taught by Professor Hughes during the Winter '08 term at McMaster University.
 Winter '08
 HUGHES
 mechanics

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