*11. ssm A bicyclist makes a trip that consists of three parts, each in thesame direction (due north) along a straight road. During the first part, sherides for 22 minutes at an average speed of 7.2 m/s. During the secondpart, she rides for 36 minutes at an average speed of 5.1 m/s. Finally, dur-ing the third part, she rides for 8.0 minutes at an average speed of 13 m/s.(a) How far has the bicyclist traveled during the entire trip? (b) What isher average velocity for the trip?

Answered: *11. ssm A bicyclist makes a trip that…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter3: Motion In Two Dimensions

Section: Chapter Questions

Problem 53AP: A celebrated Mark Twain story has motivated contestants in the Calaveras County Jumping Frog...

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A celebrated Mark Twain story has motivated contestants in the Calaveras County Jumping Frog Jubilee, where frog jumps as long as 2.2 m have been recorded. If a frog jumps 2.2 m and the launch angle is 45, find (a) the frogs launch speed and (b) the time the frog spends in the air. Ignore air resistance.
On a one lane road, a person driving a car at v1 = 58 mi/h suddenly notices a truck 1.1 mi in front of him. That truck is moving in the same direction at v2 = 35 mi/h. In order to avoid a collision, the person has to reduce the speed of his car to v2 during time interval Δt. The smallest magnitude of acceleration required for the car to avoid a collision is a. During this problem, assume the direction of motion of the car is the positive direction. 1. Use the expressions you entered in parts (c) and (f) and enter an expression for a in terms of d, v1, and v2. a = ( v2 - v1 )/Δt Δt = ( 2 ) ( d )/( v1 - v2 ) 2. Calculate the value of a in meters per second squared.
On a one lane road, a person driving a car at v1 = 76 mi/h suddenly notices a truck d = 1.9 mi in front of him. That truck is moving in the same direction at v2 = 45 mi/h. In order to avoid a collision, the person has to reduce the speed of his car to v2 during time interval Δt. The smallest acceleration required for the car to avoid a collision is a. During this problem, assume the direction of motion of the car is the positive direction. Refer to the figure below. a)Enter an expression, in terms of defined quantities, for the distance, Δx2, traveled by the truck during the time interval Δt. b)Enter an expression for the distance, Δx1, traveled by the car in terms of v1, v2 and a. c)Enter an expression for the acceleration of the car, a, in terms of v1, v2, and Δt. d)Enter an expression for Δx1 in terms of Δx2 and d when the driver just barely avoids collision. e)Enter an expression for Δx1 in terms of v1, v2, and Δt. f)Enter an expression for Δt in terms of d, v1, and v2. g)…
On a one lane road, a person driving a car at v1 = 54 mi/h suddenly notices a truck 0.65 mi in front of him. That truck is moving in the same direction at v2 = 35 mi/h. In order to avoid a collision, the person has to reduce the speed of his car tov2 during time interval Δt. The smallest magnitude of acceleration required for the car to avoid a collision is a. During this problem, assume the direction of motion of the car is the positive direction. Refer to the ﬁgure. Part (a) Enter an expression, in terms of deﬁned quantities, for the distance, Δx2, traveled by the truck during the time interval Δt. Part (b) Enter an expression for the distance, Δx1, traveled by the car in terms of v1, v2 and a. Part (c) Enter an expression for the acceleration of the car, a, in terms of v1, v2, and Δt.
On a one lane road, a person driving a car at v1 = 54 mi/h suddenly notices a truck 0.65 mi in front of him. That truck is moving in the same direction at v2 = 35 mi/h. In order to avoid a collision, the person has to reduce the speed of his car tov2 during time interval Δt. The smallest magnitude of acceleration required for the car to avoid a collision is a. During this problem, assume the direction of motion of the car is the positive direction. Refer to the ﬁgure. The expression, in terms of deﬁned quantities, for the distance, Δx2, traveled by the truck during the time interval Δt is deltax2= v2 times delta t. Part (b) Enter an expression for the distance, Δx1, traveled by the car in terms of v1, v2 and a. Part (c) Enter an expression for the acceleration of the car, a, in terms of v1, v2, and Δt. (d) enter an expression for delta x1 in terms of delta x2 and d when the drive just barely avoids collision.
Answer the ff: 1. A juggler throws a bowling pin straight up with an initialspeed of 8.20 m/s. How much time elapses until the bowling pinreturns to the juggler’s hand? 2. A car travels in the +x-direction on a straight and levelroad. For the first 4.00 s of its motion, the average velocity of thecar is vav-x = 6.25 m/s. How far does the car travel in 4.00 s?
An egg drops from a second-story window, taking 1.24s to fall and reaching a speed of 12.2m/s just before hitting the ground. On contact with the ground, the egg stops completely in 0.131s. Calculate the average magnitude of its acceleration while falling, and then the average magnitude of its acceleration while stopping.
A bird watcher meanders through the woods, walking 1.50 km due east, 1.38 km due south, and 4.60 km in a direction 79.1 ° north of west. The time required for this trip is 1.923 h. Determine the magnitudes of the bird watcher's (a) displacement and (b) average velocity.
A car stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by x(t)=〖bt〗^2-〖ct〗^3 where, b=2.40m/s^2 and c=0.120m/s^3 a) Calculate the average velocity of the car for the time interval t=0s to t=10.0s b) Calculate the instantaneous velocity of the car at t=0s; t=5.0s; and t=10.0s
During a video game, a point on the screen moved 16.6 cm in the positive y direction and then 13.6 cm in the negative x direction, all in a time of 4.2s. a. What was the point's average velocity during this time? (Magnitude only) b. What was its average speed?
A car is moving in constant motion along the positive x-direction on a straight and level road. For the first 4.0 seconds of its motion, the average velocity of the car is vav-x = 8 m/s. How far did the car travel in the first 3.0 seconds?
A man walks on a straight road from his home to a market 5 km away with a speed of 10 km/h. Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km/h. What is the magnitude of average velocity?

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