A rock is thrown vertically upward. When can you may about its vertically r befo

Question

A rock is thrown vertically upward. When can you may about its vertically r before in reaches the top of its ? a. r = +9.8 m/s b. r = -9.8 m/s c. r Depends on the inside vertically d. r = 0 Galileo deduced that an object in free fall has a constant acceleration, based on his equipment that. a. heavy and light fall side by side. b. the distance traveled by a ball rolling down an inclined rack proportional to the time. c. the distance traveled by a ball rolling down an inclined rack proportional to the (time)^2. d. the distance traveled by a ball rolling down an inclined rack inversely proportional to the time. You drive from Evansville to Boonville with a constant speed of 30 km/hr, and then immediately back to Evansville with a constant speed of 50 km/hr, What is your average speed for the round trip?

Explanation / Answer

15)
   S = ut + 0.5at2
S is the distance
t is the time
a is the acceleration of the moving object
u is the initial velocity

This shows that distance is directly proportional to the square of time.

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