Question

could someone please help me with these two:

For number 9, do i need to do anything more? The velocity would be v(t)=5/2pi(cos(10pit)

and then 9 im getting brain dead. so tired

postin pic

Answer 1

9 and 10 btw

Answer 2

in question 9 just find the 1st derivative.

and your answer looks sensible

Answer 3

and for 10 the derivative is the rate of change in V with respect to t.

so you may need to elaborate on this... whats V and whats t