Question

Тіло рухаючись з прискоренням 10 м/с2 змінило швидкість з 18 км/год до 72 км/год за який час відбулася зміна швидкості який шлях пройшло це тіло за цей час? ​

Answer 1

Дано:. CI

a=10м/с²

V⁰=18км/год. 5м/с

V=72км/год. 20м/с

t-?

S-?

a=V-V⁰/t

10=20-5/t

t=1.5с

S=Vt

S=20*1.5=30м

Answer 2

Calculating Change in Velocity, Time, and Distance

To calculate the time it took for the change in velocity and the distance traveled during this time, we can use the following kinematic equation:

v = u + at

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

First, let's convert the initial and final velocities from km/h to m/s: - Initial velocity, u = 18 km/h = 5 m/s - Final velocity, v = 72 km/h = 20 m/s

Now, we can use the equation to find the time it took for the change in velocity: 20 = 5 + 10t

Solving for t: 10t = 15 t = 1.5 seconds

Next, we can calculate the distance traveled during this time using the equation: s = ut + (1/2)at^2

Where: - s = distance - u = initial velocity - t = time - a = acceleration

Substituting the values: s = 5*1.5 + (1/2)*10*(1.5)^2 s = 7.5 + 11.25 s = 18.75 meters

Conclusion

The change in velocity from 18 km/h to 72 km/h occurred over a time of 1.5 seconds, and the body traveled a distance of 18.75 meters during this time.