Physics homework help? how can solve it?

Posted on 2014-12-16 05:45:00 in Physics by ROBOT

1. A small rocket has a mass of 30 kg. Its weight on earth will be? 300 N

2. The minimum force required to move a metal block of mass 3.0 kg when the coefficient of static friction between the block and the surface it is resting on is 0.2 would be? 60N

3. A small rocket has a weight of 500 N. If its engine produces a thrust of 750 N, it accelerates upwards at the rate of? 2.5 m/s

4. A stone is dropped from the top of a building. It reaches the ground in 4 seconds. The height of the building is? 80 m

5. You stand on a bathroom scale on the floor of an elevator. The scale reads 700 N. The elevator now accelerates upward at 1.4 m/s. What will the scale read now? 798 N

6. When a box of mass 40.0 kg is pushed across a floor with a force of 100.0 N, it moves forward with a constant speed. The coefficient of sliding friction between the box and the floor is? 0.40

7. Your mass on the earth is 70 kg. Your mass on the moon will be? 70 kg

8. According to Newton’s First Law of Motion, every object has? inertia

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