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- A physics student took a 4 hours car trip to visit a friend. In the first hour, he traveled 100 km at constant speed. In the two hours, he stopped after his car developed some trouble. In the last hour, he traveled 90 km.What was his average speed during a. first hour b. the last two hours c. the entire trip?I left my house at 7 AM, drove 1100 km and arrived in South Carolina at 6 PM. My speed at 3 PM was: A. unknown, there's not enough info B. 105 km/h, that's the speed limit C. 77 km/h D. 100 km/h8. A person travels 60 meters in one minute. Then he covers the next 30 meters in 2 minutes. Calculate his average speed. 0.5m/s 1m/s 5m/s 2m/s
- 1. A car travels 4.5 km in 10 minutes. What was its average velocity? ANSWER:1.How far does a car going 22 m/s travel in 22.7 min. Give answer in meters. Calculate answer to one decimal 2.Initially stationary, a train has a constant acceleration of 0.3 m/s What is its speed after 12.6s. Calculate answer to one decimal . 3.Initially stationary, a train has a constant acceleration of 1.3 m/s How far it travel after 21.6s. Calculate answer to one decimal . 4.A Skydiver jumps out of a helicopter and falls freely for 0.6s before opening the parachute. What is the skydiver's downward velocity when the parachute opens? Use g = 9.8 m/s ^ 2 Calculate answer to one decimal 5.During takeoffan airplane goes from 0 52 m/s is 5 s. What is its acceleration? Calculate answer to one decimal 6.During takeoffan airplane goes from 0 to 50 m/s is 75. How far is it going after . Calculate answer to one decimal.2. If you drive 113 miles in 2 hours and 15 minutes (2.25 hours) then what was the magnitude of your average velocity? Express your answer in mi/h and m/s.
- 1.A sprinter runs 500 m sprint for 44.2 seconds. What is his average speed? Calculate answer to one decimal. 2.How far does a car going 22 m/s travel in 22.7 min. Give answer in meters. Calculate answer to one decimal 3.Initially stationary, a train has a constant acceleration of 0.3 m/s What is its speed after 12.6s. Calculate answer to one decimal . 4.Initially stationary, a train has a constant acceleration of 1.3 m/s How far it travel after 21.6s. Calculate answer to one decimal . 5.A Skydiver jumps out of a helicopter and falls freely for 0.6s before opening the parachute. What is the skydiver's downward velocity when the parachute opens? Use g = 9.8 m/s ^ 2 Calculate answer to one decimal 6. During takeoffan airplane goes from 0 52 m/s is 5 s. What is its acceleration? Calculate answer to one decimal 7.During takeoffan airplane goes from 0 to 50 m/s is 75. How far is it going after . Calculate answer to one decimal.1. Jack drives a distance of 160 miles at an average speed of 35 miles/hr, followed by a distance of 190 miles at 75 miles/hr. What is his average speed over the 350-mile trip? Hint: Draw a labeled sketch of the trip. V avg miles per hour2. Do not round-off during calculations. 3. Summarize and write your final answers in 3-decimal places. Enclose your final answer/s in a box. Problem 1 A man drives his Mercedes Benz down south a straight road at 5.2 km at 40 kph at which point he ran out of gas. The man walked 1.5km farther to the nearest gas station S25°W in 25 minutes. What is the average velocity and average speed of the driver from the time that the car started to the time the driver arrived at the gas station?
- Q11. Polar bears are strong swimmers and can swim as long as 10 hours without rest. If a polar bear swims with an average speed of 2.6 m/s, what is the total distance it can swim in 10.0 hours? Give your answer in km.7. A racecar has a speed of 80. m when the driver releases a drag parachute. If the parachute causes a deceleration of 4 m, how far will the car travel before it stops? (You must start with the equations in your Physics Reference Tables. You may only use the answer to question #6 above as a starting point if you have already solved that problem.) Fdotale sido ent Answer: 800 m7. For many years, the posted highway speed limit was 88.5 km/hr (55 mi/hr) but in recent years some rural stretches of highway have increased their speed limit to 104.6 km/hr (65 mi/hr). In Maine, the distance from Portland to Bangor is 215 km. How much time can be saved in making this trip at the new speed limit?