The tip of a pinwheel is 0.24 m from the center. the pinwheel spins 5 times each second. what is the tangential speed of the tip of the pinwheel? 0.30 m/s 1.2 m/s 1.5 m/s 7.5 m/s

When a body is moving in circular path at a distance r from its center its velocity at any instant will be directed tangentially. This is what we call tangential velocity. It is calculated as follows:

Vt = r(ω)

where ω = 5 rev/s (2π rad / rev) =  31.42 rad / s

Vt = 0.24(31.42) = 7.5 m/s

The third hammer 8 pounds

26.4 is about the right time