this post was submitted on 28 Aug 2024
473 points (98.4% liked)
196
16498 readers
2911 users here now
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Differential calculus? That looks more like algebra. Their speed is constant.
I agree, it is not calculus, it's trigonometry.
Each of their speeds is constant, but different, and they're walking in different directions.
Their distance is the hypotenuse of a triangle with sides 5t and t which will be root((5t)^2^ + t^2^). So the distance at time t of the ex lovers will be root(26) × t. You can basically grasp intuitively that the speed is indeed constant and equals to the root(26)=5.1 ft/sec. Technically you’d use the derivative power rule to drop the t and get the speed.