as shown in the figure below, luis walks 40 m towards his truck. he notices he forgot his keys so he returns back to his house. his total travel is 95 seconds. what is luis’s average velocity over the 95 second period?

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.