Question

Вычислить среднюю скорость движения,если тело в течении 0,25t двигалось со скоростью 8м/c,а остальное время со скоростью 4 м/c,плиз помогите.Заранее спасибо !!!

Answer 1

Vср=S/t, S=S1+S2, t=t1+t2, S1=8*0,25t, S2=4*0,75t, Vср=t*(0,25*8+0,75*4)/t=5м/с

Answer 2

Calculation of Average Speed

To calculate the average speed of an object, we need to consider the total distance traveled and the total time taken. In this case, the body moves at a speed of 8 m/s for 0.25t and at a speed of 4 m/s for the remaining time.

Let's break down the problem step by step:

1. Calculate the distance traveled at a speed of 8 m/s: - The time traveled at a speed of 8 m/s is 0.25t. - The distance traveled at this speed can be calculated using the formula: distance = speed × time. - Therefore, the distance traveled at a speed of 8 m/s is 8 × 0.25t = 2t meters.

2. Calculate the distance traveled at a speed of 4 m/s: - The time traveled