Physics
tmizzle
17

For Brainliest 15 points! A car comes to a stop over a distance of 30.0 m after the driver applies the brakes. If the car decelerates at a constant rate of –3.50 m/s2, what was the car's original speed?

+1
(1) Answers
chewy34

Using kinematic equation, v² - u² = 2as 0² - u² = -2(3.5)(30) u² = 7(30) u² = 210 u = 14.49 m/s. Therefore original velocity was approx 14.5 m/s.

Add answer