A hat is thrown upward with a velocity of 4.2 m/s. The velocity of the
hat after 1.6 seconds is

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?