An object covers a distance of 8 meters in the first second of travel, another 8 meters during the next second, and 8 meters again during the third second. Its acceleration in meters per second per second is approximately:.
A) 24.
B) 5.
C) 0.
D) 8.

0m/s²

Explanation:

Acceleration is defined as the "change in velocity" of a body with respect to time (emphasis to be placed on change in velocity).

Note from the question that the speed/velocity of the body is constant during each time i.e 8meters per second which means the acceleration of the body is zero since there was no change in the velocity of the body and for a body to undergo acceleration, the speed/velocity of the body must change at each time interval.

Hence, its acceleration in metre per second square is 0m/s²

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6