Physics, 08.12.2019 02:31, laniflower6
Imagine two billiard balls on a pool table. ball a has a mass of 2 kilograms and ball b has a mass of 3 kilograms. the initial velocity of ball a is 9 meters per second to the right, and the initial velocity of the ball b is 6 meters per second to the left. the final velocity of ball a is 9 meters per second to the left, while the final velocity of ball b is 6 meters per second to the right.
1. explain what happens to each ball after the collision. why do you think this occurs? which of newton’s laws does this represent?
2. what can you say about the total momentum before and after the collision?
3. what do you think would happen to the velocity of each ball after the collision if the masses and initial velocities of each ball were the same?
4. the mass of ball a is 10 kilograms and the mass of ball b is 5 kilograms. if the initial velocity is set to 3 meters per second for each ball, what is the final velocity of ball b if the final velocity of ball a is 2 meters per second? use the elastic collision equation to find the final velocity of ball b. assume ball a initially moves from right to left and ball b moves in the opposite direction. identify each mass, velocity, and unknown. show your work, including units, and indicate the direction of ball b in your answer.
5. if the mass of each ball were the same, but the velocity of ball a were twice as much as ball b, what do you think would happen to the final velocity of each ball after the collision? to answer this question, create a hypothesis in the form of an if-then statement. the “if” is the independent variable, or the thing that is being changed. the “then” is the dependent variable, or what you will measure as the outcome.
( show your work if you can)
Answers: 2
Physics, 22.06.2019 05:10, wendymtz2004
Which situation will have the highest resistance? a. long wire and high temperatureb. short wire and high temperaturec. long wire and cold temperaturedshort wire and low temperature
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Physics, 22.06.2019 23:30, alangonsales6232
You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?
Answers: 3
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