It would take 46 jules to raise a 20 kg rock above your head to a total height of 2.3 m. How much work does it take, once lifted, to hold the rock, above your head for 36 minutes?

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?