Question

answer with solution

Answer 1

The distance travelled is given by area under v-t graph

area = 1/2 * 1 * 4 + 2 * 4 + 1/2 * 1 * 4 + 1 * 1/2 * 2 + 2 * 2 + 1/2 * 1 * 2  = 16 meters