Help please 1. Calculate the average speed of the car in m/s.

2.Infer How would the average speed change if you gave the car a harder push? Try it.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?