Question

which of the following is not an effect of force? i) change in the direction of an object ii) changes in the shape and size of an object. iii) change in the mass of an object. iv) change in the position of a stationary object​

Answer 1

Answer:

1) A force can move a stationary object

Explanation:

The force of motor  makes a stationery fan to move ( rotate). 

2) A force can change the speed of a moving object.

Example : When a hockey player hits a moving ball, the speed of ball increases.

3) A force can stop a moving object.

Example : The force of brakes can stop a moving car.

4) A force can change the direction of a moving object.

Example : In a cricket match, when a moving cricket ball is hit by a bat ,then the direction cricket ball changes.

5) A force can change the shape of an object. 

Example : When force is applied on flour dough, it changes it's shape .

Answer 2

Answer:

1) A force can move a stationary object

Example : The force of motor  makes a stationery fan to move ( rotate).  

2) A force can change the speed of a moving object.

Example : When a hockey player hits a moving ball, the speed of ball increases.

3) A force can stop a moving object.

Example : The force of brakes can stop a moving car.

4) A force can change the direction of a moving object.

Example : In a cricket match, when a moving cricket ball is hit by a bat ,then the direction cricket ball changes.

5) A force can change the shape of an object.  

Example : When force is applied on flour dough, it changes it's shape .

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