What is the formula for calculating resultant force?, F = m x a, How is 1 Newton defined?, The force required to give a mass of 1 kg an acceleration of 1 m/s, What type of energy is produced when work is done against friction?, Thermal energy (heat), What is starting friction, the maximum force needed to initiate movement, what is sliding friction, friction is slightly lower and required to maintain steady movement, In circular motion, in which direction does the centripetal force act?, Towards the centre of the circular path.

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