A rope is used to pull a 2.89kg bucket of water out of a deep well. What is the acceleration of the bucket when the tension in the rope is 30.2N ? if starting from rest, what speed will the bucket have after experiencing this force for 2.16 seconds.

A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76 m/s. The plane has a mass of 20,000 kg. The runway is 1.6km long and, obviously, the airplane needs to be stopped before it reaches the end of the runway. How large is the braking force the airplane needs to stop safely before the end of the runway?

A 1,500-N crate is being pushed across a level floor at a constant speed by a force F of 370 N at an angle of 20.0° below the horizontal, as shown in the figure a below. F 20.0° / b 20.0° (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) 0.220 X Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error.

The net external force on the 25.5kg mower is 48.0N. If the force of friction is 22.5N. a. What force F in newtons is the person exerting on the mower? b.Suppose the mower is moving 1.10 m/s when the force F is removed. How fat will the mower go before stopping?

While walking on water, an arctic wind freezes the water beneath your feet and you now find yourself stuck in the middle of a 15m diameter lake on top of a frictionless layer of ice.  Unable to just walk off, you decide to push off your physics book with a force of 80.0N for 0.1s.  How long in minutes will it take you to reach the shore if your mass is 75kg?

1 object with a mass of 1500 g (grams) accelerates 10.0 m/s> when an unknown force is applied to it. What is the amount of the force?

A runner travels I.5 laps around a circular track in a time of 50 s. The diameter of the track is 40 m and its circumference is 126 m. Find (a) the average speed of the runner and (b) the magnitude of the runner's average velocity. Be careful here; average speed depends on the total distance traveled, whereas average velocity depends on the displacement at the end of the particular journey.

The conveyor belt is designed to transport packages of various weights. Each 10-kg package has a coefficient of kinetic friction u. = 0.31. The speed of the conveyor is 4 m/s , and then it suddenly stops. (Figure 1) Part A Determine the distance the package will slide on the belt before coming to rest. Express your answer to three significant figures and include the appropriate units. ? Figure 1 of 1 S = Value Units Submit Request Answer B Provide Feedback

This problem has been removed by your teacher and will not affect your score. A 75kg bicyclist (including the bicycle) is pedaling uphill with a speed increasing at a rate of 1.7m/s?. The bicyclist is also experiencing a 20N drag. Neglect any friction impeding her motion. How many forces are acting on the bicyclist? Are all forces on the bicyclist balanced? What is the magnitude of the net force on the bicyclist? unit 13° What is the magnitude of the normal force on the biyclist? unit How much force is she generating by pedaling? unit cam be d check answers

The gravity acceleration at a certain level is 9.78 m/s². This acceleration varies by 8.28 x 10-⁴ m/s² for every 100m ascent. a. Find the weight of an object above this level where the acceleration due to gravity is 9.70 m/s². b. Find the weight of an object relative to this point whose mass is 80 kg at a height of 10, 000 meters c. Find the height above this point if the weight of a man decreased by 5%.