Homework Answers
a.
i)
average acceleration is given as
average acceleration = (final velocity - initial velocity) /(time interval)
between t = 2 min and t = 4 min , the length of the arrow of final velocity is greater than the length of arrow of initial velocity. hence the average acceleration comes out to be positive. and in the direction of the velocity
ii)
average acceleration is given as
average acceleration = (final velocity - initial velocity) /(time interval)
between t = 5 min and t = 7 min , the length of the arrow of final velocity is smaller than the length of arrow of initial velocity. hence the average acceleration comes out to be negative. the negative sign indicates that the direction of acceleration is opposite to the velocity.
iii)
average acceleration is given as
average acceleration = (final velocity - initial velocity) /(time interval)
between t = 7 min and t = 9 min , the length of the arrow of final velocity is smaller than the length of arrow of initial velocity. hence the average acceleration comes out to be negative. the negative sign indicates that the direction of acceleration is opposite to the velocity.
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teacher said that my work was wrong when I had to make a problem to
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Guidelines for making a problem:
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