A student throws a broken cellphone with a velocity of 100.0 m/s at 60.0 degrees with the horizontal. Neglecting air resistance, what is the magnitude of its velocity after 1s?
1. A student throws a broken cellphone with a velocity of 100.0 m/s at 60.0 degrees with the horizontal. Neglecting air resistance, what is the magnitude of its velocity after 1s?
2. A 120-N weight is hung from two ropes as shown. The tension force of the horizontal rope has magnitude:
3. A dockworker applies a constant horizontal force of 80.0 N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 11.0 m in 5.00 s. If the worker stops pushing at the end of 5.00 s, how far does the block move in the next 5.00 s?
4. A 50-kg sack of rice, resting on the ground, is dragged by a 100-N force at 30 degrees with the horizontal. What is the acceleration of the sack?
5. A dockworker applies a constant horizontal force of 80.0 N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 11.0 m in 5.00 s. What is the mass of the block of ice?
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