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P5: Quiz 6
P5: Quiz 6
1) Write down the equation that links force, work done and distance. Include the units for each of the values.
2)
a) I push a toy car across a carpet. I exert a force of 30 newtons and push the toy car 4 metres. Calculate the work done.
b) When I am pushing the toy car, energy is transferred from me to useful and wasted energy stores in the car and the surroundings.
i) What is the useful energy store that energy from me is transferred to?
ii) What is the wasted energy store that energy from me is transferred to?
3)
a) The work done to push a box 60 cm along a floor is 24 joules. Calculate the force applied to the box.
b) When the force is moving the box, what happens to the temperature of the bottom of the box that is in contact with the floor? Explain why this temperature change takes place.
4) A 63 N force is applied to an object which results in the object moving a certain distance. The work done by this force moving the object is 52.92 joules. Calculate the distance that the force moved the object. Give your answer in centimetres.
2)
a) I push a toy car across a carpet. I exert a force of 30 newtons and push the toy car 4 metres. Calculate the work done.
b) When I am pushing the toy car, energy is transferred from me to useful and wasted energy stores in the car and the surroundings.
i) What is the useful energy store that energy from me is transferred to?
ii) What is the wasted energy store that energy from me is transferred to?
3)
a) The work done to push a box 60 cm along a floor is 24 joules. Calculate the force applied to the box.
b) When the force is moving the box, what happens to the temperature of the bottom of the box that is in contact with the floor? Explain why this temperature change takes place.
4) A 63 N force is applied to an object which results in the object moving a certain distance. The work done by this force moving the object is 52.92 joules. Calculate the distance that the force moved the object. Give your answer in centimetres.