when maggie applies the brakes to her car, it slows uniformly from 15.0m/s to 0.0m/s in 2.50s. How many meters before a stop sign must she apply her brakes inorder to stop at the sign
Answers
Answered by
0
Answer:
Find the acceleration using:
v
=
u
+
a
t
∴
0
=
15
+
(
a
×
2.5
)
∴
a
=
−
6
m/s
2
Now use:
s
=
u
t
+
1
2
a
t
2
∴
s
=
15
×
2.5
−
0.5
×
6
×
2.5
2
s
=
18.75
m
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0
Answer:
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