1. Using energy consideration and assuming negligible air resistance show that thrown from a bridge 20m above water with an initial velocity 15m/s strive the water with the speed of 24.4m/s independent of the direction thrown
3. What is the average watts consumption in watts of appliances by using an 5KW/hr of energy per day. How many joules of energy does this appliances consume in a year.
2.what is the watts of operating 3watts electric bulb for a year at the cost of electricity is Naira 32.5KW/hr
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