1- Convert to equivalent units.

Question 1: How many miles are there in 21.0 km ?

Question 2: The speed limit on most highways is 120 km/hour. Can you express this in terms of m/sec?

Question
3: In the Figure below, the radius r =
3.4 m and q = 51.2^{0}. What is
the length of the arc, s, facing the angle? Express your answer in
inches.