Question asked by Filo student

A body travels a distance of $15\mathrm{m}$ from A to $\mathrm{B}$ and then moves a distance of $20\mathrm{m}$ at right angle to $\mathrm{AB}$. Calculate total distance and displacement. 9) Define uniform and non uniform motion with examples 10) What do you mean by rate of motion or speed also give its units. 11) "Speed in a vector form or speed with directions "explain and also give units 12) A car travels $30\mathrm{km}$ at uniform speed of $40\mathrm{km}/\mathrm{h}$ and the next $30\mathrm{km}$ at a uniform speed of $20\mathrm{km}/\mathrm{h}$. Find its average speed 13) What do you mean by rate of change of velodty or acceleration 14) Give formula and units af acceleration 15) What do you mean by negatlve acceleration or retardation. 16) A scooter acquires a velocity of $36\mathrm{km}/\mathrm{h}$ in 10 sust after the start it takes 20 s to stop Calculate acceleration in two cases. 17) A car travelling at $36\mathrm{km}/\mathrm{h}$ sneeds upto $72\mathrm{km}/\mathrm{h}$ in $5\mathrm{s}$ what is its acceleration 18) Usha swims in a $90\mathrm{m}$ long pool she covers $180\mathrm{m}$ in 1 minute by swimming from one end to other and back along the same stralght path. Find the average speed and average velocity of Usha 19) Study the speed time graph of body given below and answer the following questions

1. What type of motion is represented by $OA$
2. What type of motion is represented by $AB$
3. What type of motion is represented by BC
4. Find out acceleration of the body
5. Find out retardation of body
6. Find out distance travelled by body from $A$ to $B$

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Updated on: Jun 21, 2022