1. Refer to the velocity-time graph of a jogger. The positive direction is away from the jogger's home. Rank the four distances for the time intervals, A, B, C, D in decreasing order. Explain your answer. 20 15 10 C A 0. 30 40 50 20 Time (s) 10 2. Sketch a velocity-time graph for the following motions: a) a city bus that is moving at constant velocity; b) a wheelbarrow that is slowing down at a constant rate of acceleration while moving in a negative direction Speed (m/s) 25

1. Refer to the velocity-time graph of a jogger. The positive direction is away from the jogger's home. Rank the four distances for the time intervals, A, B, C, D in decreasing order. Explain your answer. 20 15 10 C A 0. 30 40 50 20 Time (s) 10 2. Sketch a velocity-time graph for the following motions: a) a city bus that is moving at constant velocity; b) a wheelbarrow that is slowing down at a constant rate of acceleration while moving in a negative direction Speed (m/s) 25

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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4. Diane dives in a pool moving at 7.6 m/s until reaching 8.42 m from the diving board. Solve the following: a. The average acceleration of the diver as she travels through the water b. Time the diver comes to a stop c. The speed of the diver after diving 5.87 m 5. Chloe joined a running marathon for charity. She was trying to overtake another runner who was in front of her. By doing so, she accelerates from 8.5 m/s to 10,4 m/s in 6s. Solve the following: a. Chloe's acceleration b. The distance travelled by Chloe 6. Jazzie is driving car and was travelling at 75 km/hr in a straight road. However, the car in front of Jazzie which was driven by George suddenly stopped, so Jazzie had to press the brakes to avoid any accidents. Jazzie begins to decelerate at a rate of 5.7 m/s'.Determine the following: a. Jazzie's initial speed in mis b. Time it takes to reach a complete stop 31
13. You need to drive to a grocery store that is 1.0 mi west of your house on the same street on which you live. There are five traffic lights between your house and the store, and on your trip you reach all five of them just as they change to red. While you are moving, your average speed is 20 mi/h, but you wait 1 min at each light. What is your average speed? a. 6.6 mi/h b. 7.5 mi/h c. 12.4 mi/h d. 20 mi/h e. None of the above
Use the value of g = 9.80 [m/s^2]
6. A train is moving with a constant speed. The train moves 60 meters for every 1.5 seconds that elapses. a. Assume that we get 40 by dividing 60 by 1.5. What is the name that is commonly given to a quantity represented by this number 40? b. To denote the quantity completely, what additional information must be given besides the number 40? c. How would you interpret the number 40 in this instance? Your answer should mention distance and time. d. Use your interpretation (not algebra) to find the distance the train moves in 2.5 seconds.
V. DISPLACEMENT, VELOCITY AND ACCELERATION 20. A car is travelling with a constant speed of 60 km/h for about 10 seconds then it came to stop at t=18s. Draw the velocity-time graph then find the displacement of the car, in meters, given that it is towards the same direction as the initial direction of the car. *Answer with the magnitude of the displacement. • Pls see the pictures • PLS WRITE THE SOLUTION PLS, GIVE ME CLEAR AND UNDERSTABLE SOLUTION PLS THANK YOU ALSO PUT A LABEL, SO IT'S NOT CONFUSING THANK YOU!!
Amodel rocket is fired vertically upward with an initial velocity of 42 m/s from a tower 165 m high. a. How long will it take for the rocket to reach its maximum height? b. What is the maximum height? c. How long will it take for the rocket to pass its starting point on the way down? d. What is the velocity when it passes the starting point on the way down? e. How long will it take for the rocket to hit the ground? f. What will be its speed at impact?
A. Answer the following questions correctly. 1. Can a displacement from one point to another be zero, yet the distance involved in moving these points be non-zero? Can the distance between two points be zero, yet the displacement from one point to the other be non-zero? Explain. Can the velocity of an object be in different direction than the acceleration? Give example. Explain how a body moves with (a) uniform motion, and (b) uniformly accelerated motion. Is it possible for a body to accelerate when its velocity is constant? Explain. 4. 5. If an object has a greater speed, does it necessarily have a greater acceleration? Explain using examples. 2. 3.
If the velocity is constant towards the right direction, the graph of displacement x vs time t is a A. line with a positive slope. B. line with negative slope. C. parabola in the first quadrant. O D. parabola in the 4th quadrant. An object is moving towards the right direction. Velocity is constant. The graph of velocity vs time t is a line O A. along the t axis B. parallel to the t axis C. parallel to the v axis. O D. with nonzero slope. Velocity of a moving object is towards the right. Velocity is constant. The graph of acceleration a vs time t is a A. line parallel to the acceleration a axis. B. line along the acceleration a axis. C. line along the t-axis. OD.line with positive slope.
HOW?An automobile travels on straight road for 39km at 24km/h. If then continues in the same direction for another 39 km at 48km/h. a. What is the average velocity of the car during his 78 km trip? (Assume that it moves positive direction) b. What is the average speed?
1. The acceleration of a car is given by a(t) = A – Bt + Ct² , where A = 1.0 m/s², B = 0.5 m/s³, C = 2.0 m/s“. The car is at rest at the origin at time t= 0. Find its position and velocity as a function of time. b. Sketch its position, velocity, and acceleration. a.
1. Refer to the velocity-time graph of a jogger. The positive direction is away from the jogger's home. Rank the four distances for the time intervals, A, B, C, D in decreasing order. Explain your answer. 15 10 C 40 50 30 20 Time (s) 0. 10 20 (s/w) pe 25
A. Identify the sketch in the graph. position B A E 1. Which object(s) is(are) maintaining a state of motion (i.e., maintaining a constant velocity)? 2. Which object(s) is(are) not moving? 3. Which object(s) change(s) its direction? 4. On average, which object is traveling fastest? 5. On average, which moving object is traveling the slowest?