- #1
electrofanner
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Homework Statement
In an experiment, a ball was released from rest at the top of a slope and rolled a distance of 2.0 m down the slope in 8.0 s. Calculate
(a) its average speed in this time
(b) the speed after 8.0s from rest
(c) the acceleration of the ball
Basically, I got the answer for a...
Which is simply Distance Tot. divided by Time Taken
= 2.0 m/8.0 s
= 1/4 m/s
The answer for b is 0.50 m/s. I have come to a conclusion that the average speed is x0.5 of the speed at that particular instance.
(2x Avg. speed in that 8s = Speed of object in 8s)
However, I don't get why this came to be. Someone please explain to it to me. Thanks
For c... Simple also (after getting b)
Which is Velocity/Time
0.50 m/s divided by 8s = 0.0625 m/s 2
Basically, All I need is an explanation for Part b.