Q. A car travels along a highway with a velocity of 24 m/s, west. The car exits the highway and 4.0 s later,its instantaneous velocity is 16m/s,45 north. what is the magnitude of the average accleration of the car during the first-four second.
Q. A spring with spring constant 11 N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 9.0 cm and released. The ball makes 40 oscillations in 16 second. What is the mass of the ball? What is the maximum speed of the ball?