6. How much force is needed to keep a 20 N stone from falling? 7. An economy car has mass of 800kg . What is the weight ?
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Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?

Consider the phase change taking place in the picture. you could use all but one statement to describe what is happening here. that is: a) temperature is increasing. b) kinetic energy is increasing. c) the space between the particles remains the same. d) the attractive force between the particles is decreasing.

As more bulbs are added to a series circuit what happens to the resistance of the circuit