It took David 30 seconds, and 55 N of force, to carry his dog 20 m up the steps. How much power did David exert? Power = Work / time
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carried. SP1a.3 Vectors and scalars. Strengthen. 1 a scalar b vector c scalar ... much effort it will take to get there ... over time, forces are pushes or pulls and have ... David's displacement is 0.5 m/s × 30 s ... 1 the ground pushing up on the dog. 9th ... energy. Student book. 7th. 1 work = 5 N × 5 m = 25 J. 7th. 2 25 J, as the final ...
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