The car is moving from rest with an acceleration of 5 m / s squared. What is the speed of the car in 4s?

To find out the speed reached by the specified car in 4 seconds, we use the formula: Vх = V0 + a * t, where V0 is the initial speed, the state of rest (V0 = 0 m / s); a – constant acceleration (a = 5 m / s2); t – considered acceleration time (t = 4 s).

Let’s perform the calculation: Vх = V0 + a * t = 0 + 5 * 4 = 20 m / s.

Answer: After 4 seconds the speed of the specified vehicle will be 20 m / s.