The minute hand on a watch is 2.0 cm in length. What is the displacement vector of the tip of the minute hand
From 8:00 to 8:20 a.m.?
From 8:00 to 9:00 a.m.?
A sprinter can accelerate with constant acceleration for 3.70 before reaching top speed. He can run the 100-meter dash in 10 s.
What is his speed as he crosses the finish line?