Q1. From t = 0 to t = 5.00 min, a man stands still, and from t = 5.00 min to t = 10.0 min, he walks briskly in a straight line at a constant speed of 2.1 m/s.
(a) What is his average velocity v avg in the interval 2.000 min to 7.80 min?
(b) What is his average acceleration a avg in the interval 2.00 min to 7.80 min?
(c) What is v avg in time 3.00 min to 9.00 min?
(d) What is an avg in time 3.00 min to 9.00 min?
Q2. A vertical scale on a spring balance reads from 0 to 160 N. The scale has a length of 12.5cm from the 0 to 160 N reading. A fish hanging from the bottom of spring oscillates vertically at the frequency of 2.30 Hz. ignoring the mass of the spring, what is the mass m of the fish?