Question

The position of a car, in metres, at time t, in seconds, is modelled by s(t)=3t^2+10t. Find its velocity at t=10.

Answer 1

replace t by 10
2)solve

Answer 2

I think it's instantaneous velocity,
d/dt(3t^2+10t)

Answer 3

mhmhm then ignore that ;3

Answer 4

dy/dt = 6t+10

Answer 5

Would I just have to replace t by 10? using this equation?

Answer 6

What are you trying to find, Instantaneous Velocity or Average Velocity?

Answer 7

The question only says to find the velocity at t=10.

Answer 8

What grade are you in?

Answer 9

12

Answer 10

Most likely your finding Inst Velocity.. do you know what is a derivative ?

Answer 11

Would it be 2(3t) + 10t?

Answer 12

Yes.. but drop the t from the 10... -> 2(3t)+10

Answer 13

Then I just plug in 10 for t?

Answer 14

yes...

Answer 15

Thank you!