Question

Study the given graph and answer the following questions from it: (a) Which parts of the graph shows accelerated motion?(b) Which part of the graph shows retarded motion? Calculate the retardation.(c) Calculate the distance travelled by the body in the first 2 seconds of the journey.

Answer 1

Explanation:

a) positive slope gives accelerated motion .

From A to B

From C to D

b)negative slope gives retarded motion

From D to E

slope of DE=10-5/8-10

=-5/2

=-2.5m/s^2

c)distance travelled under v-t graph is given by area under the graph

area=1/2b×h

distance=1/2×2×5

distance=5m