| Front | If the reaction force of a surfboard on a person is 17N, explain how this value relates the the upthrust of the water on the board |
| Back | This is equal to the upthrust according to Newton's 3rd law as this is the force the board exerts on the water so a force of equal magnitude is exerted on the board |
| Tags | Physics_Paper_1 |
| Front | Loss of Ep=20000JEk gained=11000JAverage retarding force is 140NCalculate distance moved over the 35m vertical displacement |
| Back | W=9000JW=Fss=64m |
| Tags | Physics_Paper_1 |
| Front | How to calculate work done using energy? |
| Back | If centre of mass is moving vertically down then potential lost - kinetic gainedIf centre of mass is moving vertically up then kinetic lost - potential gained |
| Tags | Physics_Paper_1 |