Question

Which of the graph lines corresponds to the relation y = k/x where k is a constant?

Answer 1

@ganeshie8

Answer 2

Suppose you are on a conveyor belt walkway at an airport. The walkway is moving at 0.50 m/s. You walk backward at 0.80 m/s to hand your suitcase to a friend who is 3.0 m behind you. A security guard stands alongside the walkway watching this. What is your speed relative to the guard?
a. 0.30 m/s
b. 0.50 m/s
c.1.30 m/s
d. 0.80 m/s

Answer 3

@ganeshie8 thank you so much for always helping me when I need it

Answer 4

I see two questions in this thread. Which question are you working on right now ?

Answer 5

I think is graph A for the first one and I just want a check , I picked A because is a hyperbole . And idk how to do the second one :/

Answer 6

graph A is correct for first q

Answer 7

thank you and how do I do the second one?

Answer 8

Suppose you are on a conveyor belt walkway at an airport. The walkway is moving at 0.50 m/s. You walk backward at 0.80 m/s to hand your suitcase to a friend who is 3.0 m behind you. A security guard stands alongside the walkway watching this. What is your speed relative to the guard?

Answer 9

-0.3?

Answer 10

Careful, the question is NOT about "velocity"

Answer 11

its just about the "speed"

Answer 12

It seems, you have the right idea. The speed with respect to the security guard is "0.3"

Answer 13

yes but that is where I get lost

Answer 14

velocity is a vector which requires both magnitude and direction

speed is a scalar which has no direction

Answer 15

therefore would it stay at 0.8?

Answer 16

@ganeshie8

Answer 17

@Somy

Answer 18

I think your first thought is correct, the only thing is that its not '-0.3' but just 0.3m/s just like @ganeshie8 said.

Answer 19

basically saying since the walkways's speed is 0.5 m/s FORWARD, but you need to go backward a certain distance, first you need a speed that would overcome the walkway's speed + the speed you'd need to actually reach where you are going against the walkway's speed
so taking a difference would give you the overall speed
your total speed - walkways speed = your actual speed without walkway's
since the guard is standing he has 0 speed so its only your speed that matters
thats why i think 0.3 is correct choice

im no pro in physics tho :3

Answer 20

alright thank you so much :)

Answer 21

no problem :)