22) You were trying to put holiday decorations on the roof, but didn't realize that the roofhad a layer of black ice making the it completely smooth. Taking the pitch (angle) of theroof as 26.6°, find your acceleration as you slip towards the edge of the roof. Hint: Don'tforget to start with a clear force diagram!26.6

Step 1: Start by drawing a free-body force diagram.The forces acting on the person are the force of…

Answered: 22) You were trying to put holiday…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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In the figure, a stuntman drives a car (without negative lift) over the top of a hillI, the cross section of which can be approximated by a circle of radius R = 285 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the hill? %3D Number i Units
Just before entering the tunnel, you notice the sign that says you must "use the tunnel with your bicycle on foot" but it is too late and you are descending through the tunnel with an initial speed of 6.6 km / h. The tunnel has a semicircular ramp with radius R = 6.3 m, and its mass combined with the mass of the bicycle is 60.3 kg. a) Find the velocity at the bottom of the curve, point 2, for when the friction force is negligible.
Rising fast ball. A batter in a baseball game will sometimes describe a pitch as being a rising ball, termed a hop. Although technically possible, such upward motion would require a large backspin on the ball so that an aerodynamic force would lift the ball. More likely, a rising ball is an illusion stemming from the batter's misjudgment of the ball's initial speed. The distance between the pitching rubber and home plate is 60.5 ft. If a ball is thrown horizontally with no spin, how far does it drop during its flight if the initial speed vo is (a) 36 m/s (slow, about 80 mi/h) and (b) 43 m/s (fast, about 95 mi/h)? (c) What is the difference in the two displacements? (d) If the batter anticipates the slow ball, will the swing be below the ball or above it? (a) Number i (b) Number (c) Number (d) MO Units Units Units
A ball is falling through air. Calculate the terminal speed (a positive number, in m/s) if these are the parameters: m = 3 kg b = 1 N/(m/s) g = 10 m/s2
7. Sally is driving at a constant speed of 25 m/s on a straight horizontal road. She sees an obstacle on the road ahead and applies the brakes! The wheels lock causing the car to slide forward. If the coefficient of kinetic friction between the tires and the road is 0.40, how long does it take the car to come to a complete stop?
Please tapy answer
16. Running without friction is impossible. In fact, to maximize your acceleration, you need to maximize the static friction between your shoes and the floor. a) Explain why static friction is necessary for running or walking. requirement, employees' shoes must have a coefficient of static friction of 0.5 or more on a specified tile surface. In an emergency, what is the minimum time interval in which a postal worker starting from rest can move a distance of 3 m on the tile surface? c) A typical athletic shoe has a coefficient of static friction of 0.8 when used on a running track. What is the minimum time interval in which an athlete starting from rest can move a distance of 100 m on a running track? b) To meet a U.S. Postal Service
- Determine the acceleration of the crate as it slides down the plane. - If the crate starts from rest 8.80 mm up along the plane from its base, what will be the crate's speed when it reaches the bottom of the incline?
2. You place a crate of mass 37.0 kg on a frictionless 4.65-meter-long incline. You release the crate from rest, and it begins to slide down, eventually reaching the bottom 1.37 s after you released it. What is the angle of the incline? 42.4 degrees 55.1 degrees 36.4 degrees 30.3 degrees
You jump up into the air. Which of the following is propelling you up into the air? Gravity Your force pushing down Your cool tennis shoes O The floor
A man is driving his car with speed 49.0 mi/h on a horizontal stretch of road. (a) When the road is wet, the coefficient of static friction between the road and the tires is 0.102. Find the minimum stopping distance (in m). m == (b) When the road is dry, H, = 0.598. Find the minimum stopping distance (in m). m
⦁ Explain why you would rather fall 10 ft onto a featherbed than on concrete using physics

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