Question

A balloon is rising at a constant speed of 5 ft/sec. A boy is cycling along a straight road at a constant speed of 15 ft/sec. When he passes under the balloon, it is 5 feet above him. Determine how fast the distance between the boy and the balloon is increasing 3 seconds after he has passed underneath it.

Answer 1

12 ft/sec
16 ft/sec
20 ft/sec
25 ft/sec
30 ft/sec

Answer 2

@perl

Answer 3

@jim_thompson5910

Answer 4

@sammixboo

Answer 5

Okay so where do we begin?

Answer 6

it is always good to draw a digram to help you visualize the situation and find the constraints

Answer 7

That's true, do you have any idea what shape are you dealing with here?

Answer 8

triangle?

Answer 9

seems like it can you draw it

Answer 10

I think I know the answer based on physics.. I don't know how to use mathematics only...

Answer 11

well physics is application of math
and this actually physic application hehe motion

Answer 12

yes yes kinematics... Lol

Answer 13

I would draw a picture... It's very difficult to imagine what is going on without a pic.

Answer 14

haven't taking physics yet! my favorite is waves