Question

A scooter moving at a speed of 20 m/s is stopped by applying brakes which produce ans acceleration of -1 m/s^2.Calculate the distance travelled .

Answer 1

Given

Initial Velocity (u) = 20 m/s

Final Velocity (v) = 0 m/s

Acceleration (a) = -1 m/s²

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To Find

Distance Travelled (s)

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Solution

To find the distance travelled by the scooter, we'll apply the 3rd Equation of Motion.

3rd Equation of Motion → v² - u² = 2as

Substitute the variable values from the equation and solve the so formed equation to find 's'.

⇒ (0)² - (20)² = 2 (-1) s

⇒ 0 - 400 = -2s

⇒ -2s = -400

⇒ s = -400 ÷ -2

⇒ s = 200 m

∴ The distance travelled by the scooter is 200 m.

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