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3 years ago

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Helppppppppppppppp asappppppppppppp

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vichka [17]3 years ago

8 0

The answer to the problem b.

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Which statement about electromagnetic waves is true?

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A car goes from rest to a velocity of 108 km/h north in 10s what is the car's acceleration in m/s2

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initial velocity of the car given as

$v_i = 0$

final velocity is given as

$v_f = 108 km/h$

as we know that

$1 km/h = 0.277 m/s$

now we can convert final speed into m/s

$v_f = 108 * 0.277 = 30 m/s$

now acceleration is rate of change in velocity

$a = \frac{v_f - v_i}{t}$

$a = \frac{30 - 0}{10}$

$a = 3 m/s^2$

so the acceleration of the car is 3 m/s^2

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