By Robert Gardner
What is friction? what's the coriolis strength? younger scientists will discover the physics of forces and movement with the good experiments during this publication. Full-color illustrations spotlight key issues to make technological know-how a snap! Many experiments are via principles for technology reasonable tasks. aid scholars ace their subsequent physics undertaking or attempt!
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Extra info for Ace Your Forces and Motion Science Project
As the turntable rotates, hold the tip of a pen or pencil at the center of the turntable. Then draw a line straight outward along the cardboard as shown in Figure 9. What does the line actually look like? Is it straight? How can you account for its shape? If someone is convinced that water always spirals clockwise down a drain in the Northern Hemisphere, partially fill a sink or bathtub with water. Use your hand to give the water a counterclockwise rotation a few minutes before you invite that person to watch the water empty down the drain.
Draw a picture of each balanced straw. In Figure 7f there are two paper clips on the other side of each straw. Determine the possible positions of the two paper clips experimentally. Then draw pictures of the balanced straws. Play a balance game with a partner. Place paper clips on one side of the soda straw. Give your partner a certain number of paper clips and challenge him or her to place the clips on the other side of the straw and make it balance without moving the paper clips a second time.
Acceleration measures the change in velocity that takes place over a certain time. For example, for an object moving in a straight line, the acceleration might be the change in speed in miles per hour that takes place each second. Suppose that the ball was started by a slap that left it going one mile per hour (one mph). You slap it at the end of one more second to go 2 mph. The acceleration is the difference in speed divided by the time that it takes, so the acceleration is Each second that you speed up the ball, you make it go one mph faster than before, so that at the end of 5 seconds, for example, the ball is moving at 5 mph.