A trolleybus moving at a speed of 36 km / h stops when braking for 4 seconds.
| June 9, 2021 | education
A trolleybus moving at a speed of 36 km / h stops when braking for 4 seconds. With what constant acceleration does it move when braking?
Task data: V0 (speed at which the trolleybus was moving) = 36 km / h (10 m / s); t (duration of braking of the trolleybus) = 4 s.
The constant acceleration of the trolleybus during braking is expressed from the formula (we take into account that the movement of the trolleybus during braking is slowed down): V = V0 – a * t = 0, whence a = V / t.
Calculation: a = 10/4 = 2.5 m / s2.
Answer: When braking, the trolleybus moved with a constant acceleration of 2.5 m / s2.
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