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3 years ago

9

Car crosses the first third of the road with unknown speed and the rest of the road with the speed of 50 km/h. What is the the s

peed in the first third if the average speed of a car is 30km/h?

1 answer:

Digiron [165]3 years ago

6 0

40 km/h because the average of 50 and 30 is 40

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Yakvenalex [24]

Answer:

The force is $-1.67\times10^{5}\ N$

Explanation:

Given that,

Mass of car = 64 kg

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Using formula of acceleration

$v^2-u^2=2as$

Where, v = final velocity

u = initial velocity

a = acceleration

s = distance

Put the value into the formula

$0^2-(34\times\dfrac{5}{18})^2=2\times a\times 1.7\times10^{-2}$

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