sthul+11111191121222
DATE:
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1. A BOOK WITH A MASS OF 3 KG . IS PLACHD ON A SHELF 2.5 m ABOYE THE FLOOR. GIVEN THAT THE ACCELERATION DIRECT TO GRAVITY IS \( 9.8 \mathrm{~m} / \mathrm{s}^{2} \).
A) WHAT IS THE GRAVITATIONAL POTENTIAL OF THE BOOK?
2. A BICYCLE AND RIDER WITH A COMBINFD MASS \& 60 KG. IS MOVING ATA SPEDO OF \( 4 \mathrm{M} / \mathrm{S} \). CAICULATE THE KINETIC ENERGY OF THE BICYCIE AND THE RIDER.