Can the distance travelled by a particle be zero when displacement is not zero?

Name the force which is responsible for change in position or state of an object.

Four cars $A$,$B$,$C$ and $D$ are moving on a levelled road. Their distance versus time graphs are shown in the figure. Choose the correct statement.

$(a)$ Differentiate between distance and displacement.
$(b)$ Under what conditions is the magnitude of average velocity of an object equal to its average speed?

Define velocity.

The velocity-time graph of a car is given below. The car weighs $1000 \ kg$.
$(i)$ What is the distance travelled by the car in the first $2 \ s$?
$(ii)$ What is the braking force at the end of $5 \ s$ to bring the car to a stop within one second?