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September 22, 2025, 04:31:57 am
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Author Topic: Kinematics Question  (Read 876 times)  Share 

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MathsNerd203

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Kinematics Question
« on: June 16, 2015, 08:43:45 pm »
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Can someone please confirm my answer to this question  ;D

A car averages a speed of 80km/h for a 120 km journey. For the first 60 kilometers it averages a speed of 60km/h. What speed must the car travel for the remainder of its journey.

I got that it should travel at 120km/h for the remaining 60km. Is this correct? If not, what did I do wrong?

Cheers  :)
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Kel9901

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Re: Kinematics Question
« Reply #1 on: June 16, 2015, 09:57:46 pm »
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Quote from: MathsNerd203 on June 16, 2015, 08:43:45 pm
Can someone please confirm my answer to this question  ;D

A car averages a speed of 80km/h for a 120 km journey. For the first 60 kilometers it averages a speed of 60km/h. What speed must the car travel for the remainder of its journey.

I got that it should travel at 120km/h for the remaining 60km. Is this correct? If not, what did I do wrong?

Cheers  :)

you're right :)
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s=change in displacement for physics
2011: Methods [47]
2012: Spesh [42] Further [47]
2013: UMEP Maths [4.5]
2014: Chem [47] Physics [48] Music Performance [43]
2015: Spesh [redo] English Accounting Music Investigation
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