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Mathhelp346
 3 years ago
PLEASE HELP:
An automobile accelerates at 1.77 m/s^2 over 6.00s to reach the freeway speed at the end of an entrance ramp. If the car's final speed is 88.0 km/h, what was its initial speed when it began accelerating? Express your answer in kilometers per hour.
Mathhelp346
 3 years ago
PLEASE HELP: An automobile accelerates at 1.77 m/s^2 over 6.00s to reach the freeway speed at the end of an entrance ramp. If the car's final speed is 88.0 km/h, what was its initial speed when it began accelerating? Express your answer in kilometers per hour.

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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\[a = \frac{\Delta v}{t} = \frac{v_f  v_o}{t}\]

Mathhelp346
 3 years ago
Best ResponseYou've already chosen the best response.0i know the formula im just having trouble converting the units

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Alright, let convert 88 km/h to m/s. \[\frac{ 88 \text{km} }{ \text{h} }\cdot\frac{ 1000 \text{m}}{ \text{km} }\cdot\frac{ 1 \text{h} }{ 3600\text{s} } = ?\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1349065649701:dw

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Does this clear everything?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Yeah, now find Vo Then convert it back to km/h

Mathhelp346
 3 years ago
Best ResponseYou've already chosen the best response.0how would i convert it back

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Let me show you. dw:1349067937197:dw

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1349068014177:dw

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\[\frac{13.78 \cdot 3600 \text{km}}{1000 \text{h}}\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Just treat units as "variable." You know what I mean?

Mathhelp346
 3 years ago
Best ResponseYou've already chosen the best response.0so it would be 49.6 km/h
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