4. In the small arc (radius 10 m), you enter the turn at 13 m/s, and slow down uniformly to 7 m/s over 2 seconds to the end of the turn. a. What is the magnitude of your acceleration at point W when your speed is 10 m/s? W b. Draw an arrow at (W) indicating the direction of the acceleration at that point. What is the angle between the direction of your velocity and the direction of your acceleration?

4. In the small arc (radius 10 m), you enter the turn at 13 m/s, and slow down uniformly to 7 m/s over 2 seconds to the end of the turn. a. What is the magnitude of your acceleration at point W when your speed is 10 m/s? W b. Draw an arrow at (W) indicating the direction of the acceleration at that point. What is the angle between the direction of your velocity and the direction of your acceleration?

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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A. Select the appropriate choice for each statement. (greater than, less than, or equal to)The magnitude of the acceleration at P is ... that at T. (greater than, less than, or equal to)The speed at S is ... that at P. (greater than, less than or equal to)The speed at P is ... that at T. (greater than, less than or equal to)The speed at N is ... that at T. (greater than, less than or equal to)The x-acceleration at S is ... 0. (greater than, less than or equal to)The magnitude of the acceleration at U is ... that at R.
In the Soap Box Derby, kids build non-motorized cars with very low-friction wheels. They race by rolling down a hill. The track at Akron's Derby Downs begins with a 14-meter section tilted 15 degrees below the horizontal. A. Draw a useful pictorial representation for this problem. Clearly indicate the angle above, and a useful coordinate system. B. What is the acceleration of a car rolling down this hill (ignore friction)? C. If a car starts from rest at the top of the section so that will be its speed at the bottom of this section of the track?
4. There are two frogs named Eroggy and Jumpy. They jumped from the top of a vertical cliff. Froggy just drops and reaches the ground in 3.50 s, while Jumpy jumps horizontally ((bida bida siya, char! Hahall with an initial speed 95 cm/s. a. How far from the base of the cliff will Jumpy hit the ground? b. How high is the vertical cliff? c. If Jumpy jumps with an angle of 30 degrees with respect to the horizontal, what should be its initial velocity for it to land on the same spot as he did when he jumped horizontally?
If I want to fit the position data to a curve x ( t ) = A t 2 + B t + C, a. which value would I get for A (acceleration)? b. which value would I get for B? c. Which value would I get for C?
A javelin thrower standing at rest holds the center of the javelin behind her head, then accelerates it through a distance of 70cm as she throws. She releases the javelin 2.0m above the ground traveling at an angle of 30° above the horizontal. In this throw, the javelin hits the ground 62m away. a. What was the acceleration of the javelin during the throw? Assume that it has a constant acceleration. b. What is the speed of the javelin as it leaves the hand of the thrower? c. What is the maximum height reached by the javelin? O 10.5m 9.8m O 8.5m O 7.0m
Q 5 please
A frictionless rolling cart has an initial velocity of 10.0 m/s as it climbs up anincline of 24 degrees .a. What is the cart’s height above the ground when it monetarily comes to astop on the ramp?b. At that instant, how far has it travelled along the ramp?
Calculate the free-fall acceleration of an object at a height of 3190 km away from the earth surface? O A. 9.81 m/s^2 B. 4.90 m/s^2 O C. 39.24 m/s^2 D. 4.35 m/s^2
Include a picture or description of your coordinate system (origin, positive direction).
Prior to landing at the airport, an airplane flies at a constant speed in a circular course with aradius of 5000 meters. An observer notices that the plane completes each round trip in 400seconds.a. What is the speed of the airplane? b.Whats the centripetal acceleration?
Q 3 please
A car is driving on I-80 traveling at 75 mph. It passes a police officer on the side of the road who is stationary. The moment that the car passes the police officer, the officer accelerates at a constant rate of 20 ft/s2 until she reaches a speed of 80 mph. At that point, her speed is maintained. a. How far does the police car travel before reaching its full speed (in ft)? b. How far does the car travel while the police car is speeding up (in ft)? c. How far does the police car travel before catching up with the car (in ft)?