The motorcyclist accelerates with an acceleration of 0.5 m / s2 for 30 s. At the end of acceleration, its speed is 25 m / s

The motorcyclist accelerates with an acceleration of 0.5 m / s2 for 30 s. At the end of acceleration, its speed is 25 m / s, and what is it equal to at the beginning?

Initial data: a (acceleration with which the motorcyclist accelerates) = 0.5 m / s2; t (acceleration duration) = 30 s; V (speed of the motorcyclist at the end of acceleration) = 25 m / s.

We express the speed of the motorcyclist at the beginning of acceleration from the formula: V = V0 + a * t; V0 = V – a * t.

Calculation: V0 = 25 – 0.5 * 30 = 10 m / s.

Answer: At the beginning of acceleration, the motorcycle had a speed of 10 m / s.