Starter - answers

Starter - answers

19 August 2011

16:11

Tell the person next to you...

·         Imagine pushing a king sized bed from one side of the classroom to the other

·         Would it make you feel tired? 

o    Yup!

·         Would you have to work hard to push it?

o    Yup!

·         What could you change so you have to do less work pushing?

o    Anything that decreases the force needed (reduce friction by putting wheels on it, ice under it, etc)

o    Anything that decreases the distance travelled (only push it half way!, etc)

o    So the formula for work must contain forceand distance