A car has an initial velocity of 25 mph. How long must the car accelerate at a constant rate of 5 mph/s before its final velocity is equal to twice its initial velocity? Start with the equations from class notes and show all work through to your final answer. Show all unit cancellations.

6:17 1 Introductory Physics Session 2 Questions 44 and 45 are open-response questions. BE SURE TO ANSWER AND LABEL ALL PARTS OF EACH QUESTION. Show all your work (diagrams, tables, or computations) in your Student Answer Booklet. If you do the work in your head, explain in writing how you did the work. Write your answer to question 44 in the space provided in your Student Answer Booklet. 44 When a child presses a button on a toy car, the car produces a long “beep" sound with a frequency of 500 Hz. a. Calculate the period, T, of the beep. Show your calculations and include units in your answer. The sound of the beep travels through air at 340 m/s. b. Calculate the wavelength of the beep. Show your calculations and include units in your answer. The child presses the button and pushes the toy car away. The car moves 5 m before it stops. It continues to beep, even after it stops moving. c. Describe what happens to the amplitude of the beep observed by the child as the car moves away from…

Please explain answers and include work. Please write the explanations and work out to make them easy to follow and understand.

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Please answer part D of this problem, Make sure you do the right work please and provide the right answer. DO not type your work upload a picture of your work please.

1.Using your measurements from Table 1, calculate the total kinetic energy of the two carts before collision for each trial (this is the initial kinetic energy, K). Show your calculations below and record your results in Table 2. 2. Using your measurements from Table 1, calculate the total kinetic energy of the two carts after collision for each trial (this is the final kinetic energy, Kʹ). Show your calculations below and record your results in Table 2. 3. Calculate the % change in kinetic energy during the collision for each trial. Show your calculations below and record your results in Table 2. % change = final − initia/ initial × 100 4.You will probably find that the total momentum changed slightly during each trial. Explain what might have caused the total momentum of your system to change during the collisions. 5.You should have found that the collision reduced the total kinetic energy of your system in each trial. Where did the kinetic energy lost during the collision go? In…

For this problem, we want to estimate the answer, so our assumptions may be a little unrealistic. Suppose we want to estimate how much air we need to send to a space station, assuming we cannot recycle air. Suppose four astronauts are in a spherical space station. If each of them typically breathes about 500 cm³of air with each breathe, and take 15 breathes per minute (average resting value): a. What is the volume of air you would need in the space station if these four astronauts stayed for a full year? b. If the density of air is 1.25 kg/m³ and it costs (thanks to SpaceX) a mere $100/kg to send objects to the space station, how much money would the astronaut air supply cost?

I need help with this problem, please.

select one perpetual motion machines,and provide description of it. Did it work?

What does kinetics mean? Explain using biology, physics, or non-scientific terms to explain kinetics.