How much time would it take (in seconds) for an Olympic skier to finish a 2.6 km race at an average velocity of 28 m/s? (Hint 1 km = 1000 m & your units must match)

That's pretty simple, we have;

We know that;

And..

Put all the values;

Therefore, the total time taken will be 92.85 sec.

b. latent learning (the word "latent" itself means something that exists but isn't obvious, only under certain conditions! )

the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm