Answer:
10) v = u + at
Let North be the positive direction
v = 15 + (-2)(10) = -5 m/s or 5 m/s South
11) Will assume displacement is limited to the period of acceleration.
s = s₀ + v₀t + ½at²
s = 0 + 15(10) + ½(-2)10² = 50 m North
(as result is positive, displacement is North)
12) Assuming the initial velocity is the positive direction.
v² = u² + 2as
0² = 1² + 2(-0.5)s
-1 = -1s
s = 1 m
