A car travels 200.0 miles west for two hours. Then it travels another 75.0 miles west for an additional hour. What is the average velocity of the entire trip? (2 points) 91.7 mph west
138 mph west
325 mph west
475 mph west

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?