Aroller coaster car has a mass of 290. kilograms. starting from rest, the car acquires
3.13 × 10^5 joules of kinetic energy as it descends to the bottom of a hill in 5.3 seconds.
calculate the magnitude of the average acceleration of the roller coaster car as it descends to the bottom
of the hill. [show all work, including the equation and substitution with units.]

The answer is 8.8 m/s^2. The acceleration (a) is the change in velocity (v) in time (t): a=Δv/t. Δv=v2-v1. Since the car starts from the rest, v1=0 m/s. The final velocity (v2) can be calculated from kinetic energy (KE) and the mass (m) of the car since KE=1/2*m*v2^2. From here: v2^2=2KE/m. v2=√(2KE/m). KE=3.13×10^5 J=3.13×10^5 kg*m^2/s^2, m=290 kg. v2=√(2*3.13×10^5 kg*m^2/s^2/290 kg)=√(2,158.62 m^2/s^2)=46.5 m/s. So, Δv=v2-v1=46.5 m/s - 0 m/s= 46.5 m/s. Now, we have Δv = 46.5 m/s and t=5.3 s, so the acceleration is: a=Δv/t=46.5 m/s/5.3 s = 8.8 m/s^2.

Option D

Proof of clinical work is required to renew one’s license in all 50 states  is not true about licensure in psychology

Explanation:

Every state license psychologists. At the abruptest, they license those psychologists who meet down instantly with patients and conduct tests or conduct out therapy. There can be notable variations in requirements and how the method is conducted out.

Some states are extra distinct than others regarding study and managed practice provisions. In all cases, at least one test is claimed. Holding the appropriate doctoral degree can be necessary for licensing purposes. A person who is licensed in at least one state and who exercises the profession will encounter that lesser discrepancy in licensing demands.