Question 2 A laptop charger passes a current of 5.0 A through a laptop battery. Over a period
of time, 45 000 C of charge is transferred to the battery. For how many hours was
the laptop left to charge?
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An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?