1 point 3. A delivery man carries a 5.0-kg box up a flight of stairs 4.0 m above the
ground. How much work was done on the box by the man? Remember that
he is countering gravity which acts downward with an acceleration of 9.8
m/s^2.

Abaseball has a mass of 0.145 kg and approaches a bat at 40.0 m/s. after it is hit, the ball leaves the bat at 50.0 m/s directly back. find the impulse of the bat on the ball. 7.25 kg*m/s 13.1 kg*m/s 5.80 kg*m/s 1.45 kg*m/s

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?