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Physics
Physics
Problem
An automobile of mass
1.2
Mg
1.2\,\text{Mg}
1.2
Mg
accelerates on a level road from
10
m/s
10\,\text{m/s}
10
m/s
to
25
m/s
25\,\text{m/s}
25
m/s
in
8.0
s
8.0\,\text{s}
8.0
s
. Neglect resistive forces. What is the average power output delivered to the car during this interval? a)
7.9
×
10
4
W
7.9\times10^{4}\,\text{W}
7.9
×
1
0
4
W
b)
5.6
×
10
4
W
5.6\times10^{4}\,\text{W}
5.6
×
1
0
4
W
c)
3.9
×
10
4
W
3.9\times10^{4}\,\text{W}
3.9
×
1
0
4
W
d)
1.7
×
10
4
W
1.7\times10^{4}\,\text{W}
1.7
×
1
0
4
W
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