To find the time of movement, after which the speed of the body will reach 5 m / s, we will use the formula: t = (Vк – Vн) / а.
Variables: Vк – required speed (Vк = 5 m / s); Vн – initial speed (Vн = 10 m / s); a – constant acceleration (a = -2 m / s2).
Calculation: t = (Vk – Vn) / a = (5 – 10) / (-2) = 2.5 s.
Answer: The body will reach the required speed in 2.5 seconds.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.