demelash-kumsa

The function s(t) = 4t^2+8t+3 gives the distance from a starting point at a time t of a particle moving along a line. Find the velocity and acceleration functions. Then find the velocity and acceleration at t=0 and t=2. Assume that time is measured in seconds and distance is measured in centimeters. Velocity will be in centimeters per second (cm/sec) and acceleration in centimeters per second (cm/sec^2).

Kinetic energy varies jointly as the mass and the square of the velocity. A mass of 8 grams and velocity of 3 centimeters per second has a kinetic energy of 36 ergs. Find the kinetic energy for a mass of 4 grams and velocity of 6 centimeters per second.

if an apple has a mass of 10kg and is rolling down a speed of 50cm/s, what's the kinetic energy?