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2 years ago

.A car skid for 290 m. assuming that the car skidded to a stop with a constant

Physics

1 answer:

snow_tiger [21]2 years ago

8 0

Answer:

The speed of the car before it began to skid is 47.56 m/s.

Explanation:

We can use kinematics to solve this problem.

We are given three known variables:

Δx = 290 m
a = -3.90 m/s²
v = 0 m/s (final velocity is 0 m/s because the car skids to a stop).

We can use this kinematic equation to solve for the initial velocity, v₀.

v² = v₀² + 2aΔx

Substitute the known variables into the equation.

(0)² = v₀² + 2(-3.9)(290)
0 = v₀² - 2262
2262 = v₀²
v₀ = 47.56 m/s

The speed of the car before it began to skid is 47.46 m/s.

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