नारायणको तौल 70kg छ । उसले 3m उचाइ भएको रूख चढ्न 20 sec मा लाग्छ भने उसको सामर्थ्य पत्ता लगाउनुहोस् ।
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In raising a 6200-n piano with a pulley system, the movers note that, for every 2.2 m of rope pulled down, the piano rises 0.12 m . ideally, find the force required to lift the piano.

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you

Why is the use of carbon-14 limited