Forces
Forces: Overview
This topic covers concepts, such as, First Law of Motion, Pushing Force, Movement of Ball & Representation of Force etc.
Important Questions on Forces
Is pulling an object easier than pushing an object? Explain.
Movement of ball on the surface is the combination of translation and _____.
Which of the following is an example of rolling motion?
Give one example where force changes the shape and size of an object.
A force can change the shape and size of an object.
What will you do to move your bicycle faster?
The sledge is not moving! To make it move, one of the kids (Kunal or Rohit) has to pull the sledge and the other has to push it. Which of the following kids should pull or push the sledge to make it move forward?
Read the actions given below. Identify whether they are push or pull and put tick mark in the correct column.
| Push | Pull | |
| A girl opening the window of a room. | ||
| An iron nail moving towards a magnet | ||
| A boy hammering a nail into the wood | ||
| A boy working on the computer by pressing the keys on the keyboard | ||
| A boy throwing a ball towards his friend | ||
| A girl drinking a cold drink with a straw. | ||
| A boy flying a kite | ||
| A lady taking out matchstick from the matchbox. |
List the various push and pull situation that may occur while playing cricket.
In a tug-of-war the players apply a _____ force on the rope.
A wedge is a modified form of an inclined plane.
Make a list of any five games that you play in school and at home. Now fill in the following table. One has been done for you.
| Game | Needs a Push | Needs a Pull | Changes Direction | Changes Shape |
| Football |
Yes |
Yes | Yes | No |
Look carefully at the picture given below. What are the people in this pictures doing? Write push or pull in the boxes to describe the action.
Look carefully at the picture given below. What are the people in this pictures doing? Write push or pull in the boxes to describe the action.
Look carefully at the picture given below. What are the people in these pictures doing? Write push or pull in the boxes to describe the action.
Force can never change the shape of an object.
Friction cannot cause wear and tear in a machine.
Force can change the direction of a moving object.
