Try multiplying by a/a.
Don't forget to think about negative numbers here. What negative numbers would give you a correct answer?
Both answers are correct!
You have the right idea. one revolution is 2(pi) radians. Converting revolutions to radians: R=revolutions Revolutions in Radians=R*2(pi) So, to convert 2.8 revolutions/sec to radians =2.8(2)(pi)/sec
With the values given, I did not find any of the answers on the graph. For a distance vs time graph. X axis is time and Y axis is distance. at t=6s, dist=5m at t=8s, dist=6m at t=10s, dist=7m at t=12s, dist=8m I don't see any of those as choices.
For problem 2, I got A, x=-1.
C is the answer I got.
Problem 1. Look at my calculation, the average rate is +12,not a negative number.