A 7 kg suitcase and a 12 kg suitcase are dropped from the same second story window at the same time. If there is no wind resistance, which of the following sentences is true? Select one:
a. The 7 kg suitcase will hit the ground first.
b. The 12 kg suitcase will hit the ground first.
c. The suitcases will hit the ground at the same time.
d. It is impossible to predict what will happen

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?

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.