With an average acceleration of -2.4 m/s2, how long will it take a cyclist to bring a bicycle with an initial speed of 13.2 m/s to a complete stop? Answer in units of s.
Carlos pushes a 3 kg box with a force of 9 newtons. The force of friction on the box is 3 newtons in the opposite direction. What is the acceleration of the box?
A scientist wants to raise the temperature of a 0.10-kilogram sample of glass from –45°C to 15°C. How much heat energy is required to produce this change in temperature?
Which of the substances listed in the table on the first page would heat up more quickly if an equal amount of heat energy were applied to all of the substances at the same time? Explain your answer.
A ray of light strikes a mirror. The angle formed by the incident ray and the reflected ray measures 90 degrees. What are the measurements of the angle of incidence and the angle of reflection?
You will be helping Galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. Before you conduct your experiment, you need to form a hypothesis. A hypothesis is a prediction of what you think will happen in the experiment. The hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur.Record your hypothesis here:Record the results from step one of the experiment (dropping the objects in the air):First trial:Second trial:Third trial:Record the results from step two of the experiment (dropping the objects in a vacuum):First trial:Second trial:Third trial:Did the experiment support your hypothesis? Using the data from your experiment, describe why you believe your hypothesis was either proven or disproven.What forces were acting on the objects dropped in the air? What force was acting on the objects dropped in the vacuum?Part two: Comparing ForcesChoose two forces and compare and contrast these forces. You must provide two ways that they are alike and two ways that they are different. You may make a list, write in paragraph form, or make a chart.Choose two forces and compare and contrast these forces. These must be different forces than used in the prior question. Provide two ways that they are similar and two ways that they are different. You may make a list, write it out, or make a chart.
A chunk of paraffin (wax) has a mass of 50.4 grams and a volume of 57.9 cm3. What is the density of paraffin?
