Forces

BIG QUESTONS for you to think about : What are forces? Ans By Celestine: A force is a push or pull. A force cannot be seen but we can feel the effects of a force. What can forces do? Ans By Celestine: Forces can cause a stationary object to move, stop a moving object, change the shape of an object, bend or break it, change the speed of a moving object, and change the direction of a moving object. How do forces work? How do we know if forces are acting on us or the things around us?Ans by Wei Bin: We can feel the effects of forces for e.g. we would be floating around Earth instead of walking normally if we do not have gravity.

As a follow-up to what we have been discussing on Forces, this page will be used to consolidate our learning on forces. There are two short video clips on forces as pulls or pushes for you to recapitulate the main concept. View them first before going on to the activity stated at the bottom of the page.

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Activity: Respond to the following questions. Look around you and observe the different forces acting on you and the things around you. Classify them as either pushes or pulls in the table below.

Pushing a friend on the swing Pressing buttons on the keyboard. || playing tug and war doing inclined pull-ups ||
 * = **Examples of Pushes** ||= **Examples of Pulls** ||
 * Push a door open.

Extension activity Please go to the discussion page to post any message pertaining to your observations/ explanations on what you have learnt or want to share with the class. //**(Please do not search or post any video clips until further instructions.)**//