exam Maths Puzzle Numerical Ability

v2=49.3m/s
t=4.9s
a=-5.44m/s2
v1=?
This is from a worksheet not a textbook. I am pretty sure you use the acceleration formula on this.

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exam Other Question

For the following pairs of A and B, Calulate:
A) the slope(gradient)of the line AB
B)the midpoint of the line joining A and B
c)the lenght of the line AB
D) the gradient of the Find the standard diviation of the data set to the nearest tenth:
(21,13,18,16,13,35,12,8,15).

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