Question

Х1= 20-20t X2= -5+10t t-? X- ?

Answer 1

x1= 20-20t  x2= -5+10t

20-20t= -5+10t

30t=25

t=0,83 (с)

x1=20-20*0,83=3,4 (м)

Answer 2

To find the values of 't' and 'X' in the given equations, we need to equate X1 and X2, as they both represent the same quantity 'X' at different points in time:

Given: X1 = 20 - 20t X2 = -5 + 10t

Since both X1 and X2 represent the same quantity 'X', we can set them equal to each other:

20 - 20t = -5 + 10t

Now, let's solve for 't':

Add 20t to both sides: 20 = -5 + 10t + 20t

Combine like terms: 20 = -5 + 30t

Add 5 to both sides: 25 = 30t

Now, divide by 30 to solve for 't': t = 25 / 30 t = 5 / 6

So, the value of 't' is 5/6.

Now, to find 'X', we can substitute the value of 't' into either X1 or X2:

Using X1: X1 = 20 - 20t X = 20 - 20 * (5/6) X = 20 - 100/6 X = 20 - 50/3 X = (60 - 50) / 3 X = 10 / 3

So, the value of 'X' is 10/3.

To summarize: t = 5/6 X = 10/3