Question

please help me answer these questions, im not able to understand from the book and need your help. please dont spam.

1. Write an example of uniform motion.

2. What quantity does the slope of displacement-time graph indicates.

3. Convert the following 36 km/hr into m/s.

4. Express 54 km/hr in m/s.

5. Define acceleration? Give S.I. units?

6. Distinguish between rest and motions.

7. A scooterist covers a distance of 6 km in 5 seconds, calculate the speed in m/s.

8. Give S.I. units of the following: (a) Distance (b) Velocity (c) Retardation (d) Speed. 9. A cyclist travels twice around a circular path of length 500 m:

(a) What distance does he travel?

(b) What is his total displacement?

Answer 1

Answer:

1. Linear Motion or motion of a car along a straight road

2. The slope indicates the velocity.

3. 36km/hr = 10m/s

4. 54km/hr = 15m/s

5. Acceleration is the state of change of velocity in unit time. Its SI Unit is m/s^2 (meter per second square)

HOPE THIS MAY HELP YOU

Explanation:

Answer 2

Answer:

1)

Examples of uniform motions

1. An airplane cruising at a level height and a steady speed.
2. A car going along a straight level road at steady speed.
3. A vibrating spring in a sewing machine.
4. A ship steaming on a straight course at steady speed.
5. A train going along the tracks at steady speed.