(b) The displacement y centimetres of the side value of an engine is given by y = 3.2cоs4лt + 4.5sin4πt Determine the velocity in metres per second when t=10 ms.

If a coffee filter is dropped, its velocity after t seconds is given by v(t)=4(10.0003t) feet per second. What is the terminal velocity, and how long does it take the filter to reach 99 of terminal velocity? Use a table increment of 0.1 and given your answer to the nearest tenth of a second.

Find an equation of the tangent line to the parabola y=3x2 at the point 1,3.