What is the acceleration of a car moving at a speed of 70 km / h if after 2 s it stops?
| February 15, 2021 | education
Task data: V0 (speed with which the car was moving) = 70 km / h (19.44 m / s); t (deceleration duration) = 2 s; the vehicle has stopped and V (final speed) = 0 m / s.
The acceleration of the car during braking is determined from the formula: V = V0 – a * t, whence a = V0 / t.
Calculation: a = 19.44 / 2 = 9.72 m / s2.
Answer: When braking, the car moved with an acceleration of 9.72 m / s2.
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