You grabbed a power drill that claims it can reach 2234 rpm in 0.8 s. How many revolutions does the drill make in 0.8 s?
average speed is half of top speed (from zero start)
rps = rpm / 60
(ave rps) * 0.8 s = revolutions
acceleration = a = [ (2234-0) res/60s ] /.8s
= 46.54 revs/s^2
revs = (1/2)a t^2
= (1/2)(46.54)(.64) = 14.9 revs
Either way :)
To find the number of revolutions the power drill makes in 0.8 seconds, we need to use the formula:
Revolutions = (RPM × Time) / 60
Given that the power drill has a maximum speed of 2234 RPM and the time is 0.8 seconds, let's calculate the number of revolutions:
Revolutions = (2234 RPM × 0.8 s) / 60
First, let's multiply 2234 RPM by 0.8 seconds:
2234 RPM × 0.8 s = 1787.2
Now, divide the result by 60 to get the number of revolutions:
1787.2 / 60 = 29.787
Therefore, the power drill will make approximately 29.787 revolutions in 0.8 seconds.