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chris215
 one year ago

chris215
 one year ago


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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0use the formula D=RT

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes correct so you would divide what to get T by its self

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is that 7.5 minutes per second

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0my best guess would be 6 seconds

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what i would do is use the formula that i showed you and plug in the numbers but just to make sure im not giving you the wrong answer im going to have my friend help you @Elsa213

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1A car moving with a speed of 108 km/h is brought to rest in a distance of 60 m. The car's acceleration is 7.5 m/s/s. How much time did the car take to stop? So the initial velocity of the car is 108 km/h and it's brought to rest in a distance of 60m and the cars acceleration is 7.5 m/s^2 t = ? Now we have the formula \[d= v_0 t + 1/2 at^2\] now put it together.

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1No it doesn't, but this formula may be a bit too difficult for you atm as you would have to use quadratic formula, lets just make it simple on ourselves and use \[v_f = v_i + at\]

chris215
 one year ago
Best ResponseYou've already chosen the best response.1whats final and initial velocity thought

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1You should be able to figure that out, I actually posted it above.

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1The point of this problem is for you to figure out if you know all the quantities and what they mean.

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1Try setting it up, make sure you solve for t, and note that you have to convert your units to m/s!! Try it out and if you get it wrong, don't worry I will help you then.

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1Ok, so reading this question `A car moving with a speed of 108 km/h is brought to rest in a distance of 60 m.` Notice how it says the car is brought to REST in a distance of 60m, so it's final velocity = 0, as it's at rest, and initial is 108 km/h.

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1You have to convert the 108 km/h though to m/s

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1This is why I said we need to read it carefully earlier :P

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1Right on, now solve for t.
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