A motorcyclist sees a branch in the road, and hits the brakes, slowing down at -6.42 m/s². If it takes him 2.85 s to stop, what was his starting velocity? (Unit = m/s) Enter
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- The height of a projectile moving vertically is given by the table, where t is the elapsed time in seconds and h is the height in feet. t = 0, 1, 2, 3, 4, 5 h = 100, 684, 1236, 1756, 2244, 2700 If the height is modeled by h(t) = -16t2 + v0t + h0, where v0 and h0 are the velocity and height at t = 0, respectively, find v0A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of 26 ft/s. Its height in feet after t seconds is given by y=26t−13t^2A. Find the average velocity for the time period beginning when t=1 and lasting .01 s: .005 s: .002 s: .001 s: NOTE: For the above answers, you may have to enter 6 or 7 significant digits if you are using a calculator.Estimate the instanteneous velocity when t=1.What is the average speed of a bunny rabbit when she hops 6 meters to the east across the room in 11 seconds? Express your answer using the proper SI units. Round your answer to two decimal places. Please answer it correctly, neatly, and completely.
- A jet airplane reaches 812./kmh on a certain flight. What distance does it cover in 5.0min? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols. distance=An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled, in meters, before takeoff. (Answer in whole numbers, no decimals, no commas, no units. Ex: If your answer is 1,234 m, write 1234. Otherwise incorrect.)while john is traveling along a straight inter state highway, he notices that the mile marker reads 251 km. john travels until he reachers the 141 km marker and then retraces his path to the 167 km marker. what is johns resultant displacemnet from the 251 km marker? answer in units of km how far has he traveled? answer in units of km
- A jet airplane reaches 679./kmh on a certain flight. What distance does it cover in 6.0min? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols.Sleds propelled by rockets are used to study how humans react to sudden acceleration. If a rocket-powered sled accelerates to a speed of 442.82 m/s in 1.71 seconds, what is the sled's acceleration (measured in meters per second squared)? Only the final answer, stated to three decimal places, should be rounded off.A bicyclist travelled for T = 1.7 hours at a constant speed of R = 13 kilometers (km) per hour. Use the formulaD = R · T
- Remember to use unit conversion and dimensional analysis to check your answers. That is, verify the units of your answer are the expected units. If a car brakes from a speed of 31 m/s to 5 m/s over a distance of 23 m, what was its acceleration?Experts, kindly help me? Please make it short and simple thank you!Please help me answering this question as fast as you can. and make sure the answer is correct 100%