Question1
A car travelling at 110 {rm km/h} strikes a tree. The front end of the car compresses and the driver comes to rest after travelling 0.75 {rm m}.What was magnitude of the average acceleration of the driver during the collision? State the answer in terms of "g's," where 1.00 {g} = 9.80 {rm m/s^{2}}.
Question2
A 5.5 kg block hangs from a spring with spring constant 2180 N/m. The block is pulled down 4.1 cm from the stability position and given an initial velocity of 0.8 m/s back toward equilibrium.
a. what is frequency of the motion?
b. what is amplitude?
c. what is total mechanical energy of the motion?