Answers

2014-04-14T11:49:54+05:30
Force is a push or pull upon an object.energy is non material property that can change matter.gravitation is a force of attraction between all objects in the universe.force is a vector quantity.all objects are effected by several physical forces at once. 
0
2014-04-14T16:55:26+05:30
Force is defined as a pull or a push on an object. It is a vector quantity i.e. it has both magnitude and direction. Force has the following effects on an object-
1) It can make a stationary object move.
2) It can make a moving object stop or slow.
3) It can change the direction of a moving object.
4) It can change the speed of the moving object.
5) It can change the shape or size of an object.

Examples-

1) Kicking a stationary ball.
2) Stopping a ball while fielding.
3) Hitting a ball with tennis changes its direction.
4) Accelerating a toy car.
5) Pressing a balloon with fingers.
1 5 1