Question

A motor spins 310 times in 62 s. The number of spins varies directly with the length of time the motor is running.



How long will it take the motor to spin 495 times?



s

Answer 1

"The number of spins varies directly with the length of time the motor is running."
form would be s = kt

Where s is # of spins and t is seconds. k is just constant.

So you know that it takes motor 62 sec to spin 310 times.

That is 310 = k62

solve for k, then plug in equation and s = 495

solve for t

Answer 2

@1568 , do you get what @micahwood50 told you? Do you still need help on this?

Answer 3

no:(

Answer 4

Alright, what don't you understand, anything in particular? Do you get the first relation he stated, s = kt?

Answer 5

yes I get the first one:)

Answer 6

Alright, so what did you get for k? Tell me that, first off.

Answer 7

3921.65

Answer 8

That is not right. Let me write this out to show you what he was talking about.

Answer 9

\[s = kt\]
\[s = 310 \ \text{spins,} \ k=\text{unknown,}\ t=62 \ \text{seconds.}\]

Answer 10

The first thing I want you to do is plug in those values into the equation and then write out what you got, and then post it. Don't try to solve for anything yet, just write out what the equation looks like with the numbers substituted in. You got this!

Answer 11

Can you take a shot at this next part? You're so close.