Question

a skater accelerates at a constant rate as she travels increases 7.0 metter along a straight track from point A to point B. If her speed was 2/2 m/s at point A and will be 3.5 m/s at pint B, how long will take her to go from A to B

Answer 1

Use this to find a
\[\Large v_f^2 = v_i^2 + 2 a \Delta x\]
then this to find t
\[\Large x = v_i t + 0.5at^2 \]