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4 years ago

How much farther will a car traveling at 100 km/s skid than the same car traveling at 50 km/s?

Physics

1 answer:

Roman55 [17]4 years ago

6 0

Answer:

option A

Explanation:

given,

speed of car 1 = 100 Km/s

speed of car 2 = 50 Km/s

final speed = 0 Km/s

now,

skid mark when the car is moving at 100 Km/s

using equation of motion

v² = u² + 2 a s₁

0² = 100² - 2 a s₁

100² = 2 a s₁

$s_1 = \dfrac{100^2}{2a}$ ..........(1)

now,

skid mark when the car is moving at 50 Km/s

using equation of motion

v² = u² + 2 a s₂

0² = 50² - 2 a s₂

50² = 2 a s₂

$s_2 = \dfrac{50^2}{2a}$ ..........(2)

dividing equation (1)/ (2)

$\dfrac{s_1}{s_2} = \dfrac{100^2}{50^2}$

$\dfrac{s_1}{s_2} =4$

s₁ = 4 s₂

Hence, the skid mark for 100 Km/s is four time as far as 50 Km/s

The correct answer is option A

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2 years ago

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Answer:

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Hence,

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3 years ago

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Answer

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Answer:

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