Question

1. GIVE ONE WORD FOR THE FOLLOWING
1. A state in which a body does not change its position with respect to the surroundings. A
2. A state in which a body changes its position with respect to the surroundings. Alma
3. A motion in which all the parts of a body move through the same distance in the same time interve
4. A motion in which objects move along a straight line
. 5. The back and forth motion.
6. A motion which repeats itself after regular intervals of time.
7. A pendulum whose time period is 2 second.​

Answer 1

Answer:

7. A pendulum whose time period is 2 second.

Answer 2

1. A state in which a body does not change its position with respect to the surroundings.

$\longrightarrow$ Rest

• A body is said to be at rest if it doesn't change its position with respect to its reference point,as the time passes.
• Here, reference point is taken its surroundings.

2. A state in which a body changes its position with respect to the surroundings.

$\longrightarrow$ Motion

• A body is said to be in motion if it changes its position with respect to its reference point, as the time passes.
• Here, reference point is taken its surroundings.

3. A motion in which all the parts of a body move through the same distance in the same time intervals.

$\longrightarrow$ Uniform motion

• A body is said to have uniform motion if it covers equal distances in equal intervals of time.
• The length of time interval doesn't matter whether it is short or long.

4. A motion in which objects move along a straight line.

$\longrightarrow$ Rectilinear motion

• In rectilinear motion, the object moves along a straight line.

5. The back and froth motion.

$\longrightarrow$ Oscillatory motion

• Oscillatory motion is the to and froth motion.
• The motion of the pendulum is an example of oscillatory motion.

6. A motion which repeats itself after regular intervals of time.

$\longrightarrow$ Periodic motion

• As the name suggests, periodic motion is the motion which repeats itself after regular intervals of time.

7. A pendulum whose time period is 2 seconds.

$\longrightarrow$ Seconds pendulum

• Seconds pendulum have time period of 2 seconds.