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Ivanshal [37]
3 years ago
5

The driver of a car traveling at 54ft/sec suddenly applies the brakes. The position of the car is s=54t-3t^2, t seconds afyer th

e driver applies the brakes.
How many seconds after the driver applies the brakes does the car come to a stop
Mathematics
1 answer:
castortr0y [4]3 years ago
6 0
  <span>s = 60t - 3t^2 
v = ds/dt = 60 - 6t 

when it comes to rest, v = 0, 
so t = 10 sec 

now distance travelled = time taken x average velocity 
= 10 x (60 + 0)/2 
= 300 ft 

</span>
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Step-by-step explanation:

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<span><span>1.       </span>There are many ways of solving this kind of division problem. But I will showing the easiest one.
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Now, let’s add 60 + 3 = 63, the answer is 63.
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Let’s check
=> 15.75 / 0.25
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Step-by-step explanation:

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