Question 3 A fish swimming in a horizontal plane has velocity vo = (4î+) m/s at a point in the ocean whose
displacement from a certain rock is ro = (10î – 4ſ)m. After swimming with constant acceleration for
20s, its velocity is v = (20î - 5ſ) m/s.
a) What are the components of the acceleration?
b) What is the direction of the acceleration with respect to unit vector i?
c) Where is the fish at t = 25s and in what direction is it moving?
[4]
[2]
[4]

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)