View attachment 21798 please help me for solve this problem.
If I were to do this problem, I would sketch putting the cars at the origin and one would travel negative x direction (west) and the other would travel negative y direction (south). Now define the speeds as dx/dt and dy/dt and the distance between those cars at anytime 't' would be r(t).View attachment 21798 please help me for solve this problem.
Yes - 122 + 52 = 132First, write the distance the south moving car is from the original point in terms of time, t. Second write the distance the west moving car is from the original point in terms of time, t. Third write the distance between the two cars in terms of time, t (hint: Pythagorean theorem). Finally differentiate that with respect to t to get a rate.
(The arithmetic turns out to be surprisingly simple!)
- 122 + 52 = 132???Yes - 122 + 52 = 132
It is NOT: -12^2 - it is - - 12^2- 122 + 52 = 132???
I understand now. Thanks for explaining it to me.It is NOT: -12^2 - it is - - 12^2
There is a space - a sea of quarks and electrons between that 12 and - (hyphen).
First, write the distance the south moving car is from the original point in terms of time, t. Second write the distance the west moving car is from the original point in terms of time, t. Third write the distance between the two cars in terms of time, t (hint: Pythagorean theorem). Finally differentiate that with respect to t to get a rate.
(The arithmetic turns out to be surprisingly simple!)
I don't know x and yNow use the equation you had derived. After 2 hrs:
x = ?
y = ?
r = ?
dx/dt = ?
dy/dt = ?
Now calculate dr/dt = ?
I don't know x and y
Did you read the above (response #3)?If I were to do this problem, I would sketch putting the cars at the origin and one would travel negative x direction (west) and the other would travel negative y direction (south). Now define the speeds as dx/dt and dy/dt and the distance between those cars at anytime 't' would be r(t).
This problem has not given us an x and y.Did you read the above (response #3)?
However, it did give you data using which you can calculate x and y.This problem has not given us an x and y.
x = ?
y = ?
ok is it mean that x=120 and y=50?However, it did give you data using which you can calculate x and y.
Read the problem again.
How long (time) after starting, we need to measure distance?
What are the respective speeds of each car? What is the equation that combines constant speed, distance and time?
Now I ask again:
What do you think? Are you wrong or correct?ok is it mean that x=120 and y=50?
According to the definition of speedWhat do you think? Are you wrong or correct?
Sorry x=50 and y=120What do you think? Are you wrong or correct?