3 years ago

A racing car increases its speed from 10 m/s to 50 m/s over a distance of 60 m.

1 answer:

Nookie1986 [14]3 years ago

5 0

We can solve this by using the equation

S = ut + 1/2 at^2
Where S is distance
And u is initial velocity
And a is acceleration

a = v-u/t

So
S = ut + 1/2 x v-u/t x t^2
60 = 10t + 1/2 x 50 - 1/2 x 10 x t
60 = 10t + 25 - 5 x t
60= 10t + 20t
60 = 30t
60/30 = t
2 equals t

So it takes 2 seconds

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Colt1911 [192]

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3 years ago

We often refer to the electricity at a typical household outlet as being 120 V. In fact, the voltage of this AC source varies; t

astra-53 [7]

Explanation:

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