Is -2×10 greater than 10?
1 answer:
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Answer:
$39.33 (rounded to nearest cent)
Step-by-step explanation:
Cost of shirt normally = $65
Cost of shirt for 3 days = × $65
= × $65
= $35.75
Cost of shirt on 4th day = × $35.75
= × $35.75
= $39.33 (rounded to nearest cent)
Answer:
Angle = Ф = (0) = 0
Hence, it is proved that angle between position vector r and acceleration vector a = 0 and is it never changes.
Step-by-step explanation:
Given vector r(t) =
As we know that,
velocity vector = v =
Implies that
velocity vector =
As acceleration is velocity over time so:
acceleration vector = a =
Implies that
vector a =
vector a =
Now scalar product of position vector r and acceleration vector a:
r. a =
r.a =
r.a = 0
Now, for angle between position vector r and acceleration vector a is given by:
cosФ = =
Ф = (0) = 0
Hence, it is proved that angle between position vector r and acceleration vector a = 0 and is it never changes.