Force Changes Speed And Direction
Force Changes Speed And Direction
Force can change the Speed of a Moving Object
To change the speed of an object certain force has to applied. If the force is applied in the direction of motion of the object, its speed increases. On the other hand, if the force is applied in the direction opposite to the direction of motion of an object, then its speed decreases. For example
1. A bicycle is moving at a certain speed.and if someone pushes the moving bicycle from behind, then the speed of bicycle increases and it will start moving faster. On the other hand, if someone pulls he moving bicycle from behind, then the speed of bicycle decreases and it will start moving slowly. Thus, a push or pull that is force can change the speed of a moving bicycle.
2. When a ball is dropped from a height, its speed goes on increasing. The speed of a falling object increases because the Earth pulls a falling object towards its centre because of gravity and increases its speed On the other hand, when a ball is thrown upwards, then its speed goes on decreasing. This is because the earth applies a pulling force of gravity on the ball in the downward direction opposite to the motion of the ball.
3. When a hockey player hits a moving ball, the speed of ball increases.
4. When we pedal the bicycle faster, then the speed of bicycle increases. And when we apply brakes to the moving bicycle, then the speed of bicycle decreases.
On analysing all these examples we conclude that a force can change the speed of a moving object.
A Force can Change the Direction of a Moving Object:
To change the direction of an object certain force has to applied. For example
1. In a cricket match, when a moving cricket ball is hit by a bat, then the direction of cricket ball changes and it goes in another direction. In this case, the force exerted by bat changes the direction of a moving cricket ball.
2. In the game of carrom, when we take a rebound, then the direction of striker changes. This is because the edge of the carrom board exerts a force on the striker.
3. If we blow air from our mouth on the smoke rising up from a burning agarbatti, then the direction of motion of smoke changes. In this case, the force exerted by the blowing air changes the direction of moving smoke.
On analysing these examples we conclude that a force can change the direction of motion of a moving object. The state of motion of an object is defined by its speed and the direction. A change in either the speed of an object, or the direction of its motion, or both, is called a change in its state of motion. A force can change the state of motion of an object.
If the force is applied in the direction opposite to the direction of motion of an object, then its speed _____________ . | |||
| Right Option : C | |||
| View Explanation | |||
If the force is applied in the direction of motion of the object its speed ___________________. . | |||
| Right Option : A | |||
| View Explanation | |||
In the game of carrom, when we take a rebound, then the direction of striker changes. This is because of the ________________ | |||
| Right Option : C | |||
| View Explanation |
Students / Parents Reviews [10]
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
