The Fundamental Unit of Life — Science STD 9 — Question

50. Which of the following can sometimes be 'zero' for a moving body?

1. Average velocity.
2. Distance travelled.
3. Average speed.
4. Displacement.

Out of the following, an example of matter which can be termed as fluid is:

1. Carbon.
2. Sulphur.
3. Oxygen.
4. Phosphorus.

Select the characteristics of particles of matter:

In a motion with constant acceleration the velocity is reduced to zero in 5 seconds and after covering a distance of 100m. The distance covered by the particle in next 5 second will be:

The value of quantity G in the formula for gravitational force:

1. Depends on mass of the earth only.
2. Depends on the radius of earth only.
3. Depends on both mass and radius of earth.
4. Depends neither on mass nor on radius of earth.

Milk does not provide:

If two solutions have the same concentrations, they are said to be:

In case of negative work, the angle between the force and displacement is :

Flexibility in plants is due to:

Which of the following cannot travel through vacuum?