Lakhmir Singh and Manjit Kaur Solutions for Chapter: Motion, Exercise 8: Long Answer Type Questions

A train starting from stationary position and moving with uniform acceleration attains a speed of $36$ km per hour in $10$ minutes. Find its acceleration.

Write the three equations of uniformly accelerated motion. Give the meaning of each symbol which occurs in them.

A car acquires a velocity of $72 \mathrm{km} \mathrm{per} \mathrm{hour}$  in $10 \mathrm{seconds}$ , Find:

1. the acceleration,
2. the average velocity, and
3. the distance travelled in this time.

What is meant by uniform circular motion? Give two examples of uniform circular motion.

The tip of a seconds' hand of a clock takes $60$ seconds to move once on the circular dial of the clock. If the radius of the dial of the clock be $10.5 \mathrm{cm}$, calculate the speed of the tip of the seconds' hand of the clock. (Given $\mathrm{\pi }=\frac{22}{7}$) 

Show by means of graphical method that:

$v=u+at$

where the symbols have their usual meanings.

Show by using the graphical method that:

$s=ut+\frac{1}{2}a{t}^2$

where the symbols have their usual meanings.

Derive the following equation of motion by the graphical method:

$v^2=u^2+2as$

where the symbols have their usual meanings.