Question

Какую скорость приобретает автомобиль через 20 секунд двигался с ускорением 0,4 м/с^2 если начальная скорость равна 2 м/с

Answer 1

Дано Vo=2 м/с  a=0,4 м/с2   t=20 c   V- ?

V=Vo+a*t=2+0,4*20=10 м/с

Ответ V=10 м/с

Answer 2

Calculating the Speed of the Car

To calculate the final speed of the car after 20 seconds with an initial velocity of 2 m/s and an acceleration of 0.4 m/s^2, we can use the following kinematic equation:

v = u + at

Where: - v = final velocity - u = initial velocity - a = acceleration - t = time

Substitute the given values: - u = 2 m/s - a = 0.4 m/s^2 - t = 20 s

Using the equation, we get: v = 2 + (0.4 * 20)

Calculating the final velocity: v = 2 + 8 = 10 m/s

So, the car's speed after 20 seconds is 10 m/s.