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प्रश्न
An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target. Based on this information fill up the gap in the following statement using the following terms.
While the arrow moves towards its target, the forces acting on it are due to ______ and that due to ______ of air.
पर्याय
muscular
contact
non-contact
gravity
friction
shape
attraction
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उत्तर
While the arrow moves towards its target, the forces acting on it are due to gravity and that due to friction of air.
Explanation:
Objects or things fall towards the earth because the earth pulls them. This force is called gravity, or just gravity. The force responsible for changing the state of motion of objects is friction.
संबंधित प्रश्न
Give two examples of situations in which you push to change the state of motion of objects.
To move a loaded trolley we have to ______ it.
In the following situation identify the agent exerting the force and the object on which it acts. State the effect of the force in case.
An athlete making a high jump to clear the bar at a certain height.
Give one example of force as a push
Explain the meaning of the term force.
What do you mean by the gravitational force? Give an example to illustrate it.
Match the following.
| Column A | Column B |
| 1. Non-contact forces | a. perpendicular to surface |
| 2. Catapult | b. an act of push or pull |
| 3. Force | c. unit of force |
| 4. Normal force | d. action-at-a-distance forces |
| 5. Newton | e. contact force |
Solve the crossword puzzle.
Across
1. Type of force which depends upon the roughness of a surface
2. An effect of friction
3. The force of friction caused due to fluids
4. Type of friction acting between two bodies at rest
5. Type of friction which occurs when applied force overcomes static friction
6. A special body design to enable minimum drage Down
A horse continues to apply force in order to move a cart with a constant speed. Explain why?
A truck of mass M is moved under a force F. If the truck is then loaded with an object equal to the mass of the truck and the driving force is halved, then how does the acceleration change?
