Lakhmir Singh and Manjit Kaur Solutions for Chapter: Motion and Time, Exercise 3: Long Answer Type Questions

The distances travelled by a car at various time intervals are as follows:
Distance($\mathrm{m}$):  $0 5 10 15 20 25$
Time        ($\mathrm{s}$):  $0 2 4 6 8 10$
Draw a distance-time graph for the car.

The distances travelled by a car at various time intervals are as follows:
Distance($\mathrm{m}$):  $0 5 10 15 20 25$
Time        ($\mathrm{s}$):  $0 2 4 6 8 10$
What conclusion do you get from the graph about the nature of motion of the car?

A bus starts from rest at $2.00 \mathrm{P}\mathrm{M}.$ The distances covered by the bus at various instants of time are recorded as follows:
Distance  (km):  $0 10 20 30 40 50$
Time       (PM): $2.00 2.30 3.00 3.30 4.00 4.30$

Draw the distance-time graph for this bus.

A bus starts from rest at $2.00 \mathrm{P}\mathrm{M}.$ The distances covered by the bus at various instants of time are recorded as follows:
Distance  (km):  $0 10 20 30 40 50$
Time       (PM): $2.00 2.30 3.00 3.30 4.00 4.30$

What distance was covered by the bus at $3.15 \mathrm{P}\mathrm{M}$?

Draw a distance-time graph to show the motion of a car moving with a speed which is not constant (non-uniform speed).

State any two advantages of drawing distance-time graphs for moving objects.

What is a simple pendulum? Define the time period of a simple pendulum.

In an experiment to measure the time period of a simple pendulum, the time for $20$ complete oscillations was found to be $36 \mathrm{s}$. What is the time period of this pendulum?