An athlete is training on a 100 m long linear track. His motion is described by the graph of his position vs. time, bel X (m) 10아 80 60 40 A 20 t (s) 60 10 20 30 40 50 (a) For each segment of the graph, find the magnitude and direction of the athlete's velocity. magnitude va m/s direction va --Select-- magnitude vg m/s direction vB -Select- magnitude vc m/s direction vc --Select-- magnitude vo m/s direction vo ---Select-- (b) What are the magnitude and direction of the athlete's average velocity over the entire 60 s interval? magnitude m/s direction -Select---

An athlete is training on a 100 m long linear track. His motion is described by the graph of his position vs. time, bel X (m) 10아 80 60 40 A 20 t (s) 60 10 20 30 40 50 (a) For each segment of the graph, find the magnitude and direction of the athlete's velocity. magnitude va m/s direction va --Select-- magnitude vg m/s direction vB -Select- magnitude vc m/s direction vc --Select-- magnitude vo m/s direction vo ---Select-- (b) What are the magnitude and direction of the athlete's average velocity over the entire 60 s interval? magnitude m/s direction -Select---

Physics for Scientists and Engineers

10th Edition

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter6: Circular Motion And Other Applications Of Newton's Laws

Section: Chapter Questions

Problem 39AP: Galileo thought about whether acceleration should be defined as the rate of change of velocity over...

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KEY TERMS 1. physics (intro) 2. position (2.1) 3. motion 4. scalar (2.2) 5. vector 6. average speed 7. distance 8. instantaneous speed 9. average velocity 10. displacement 11. instantaneous velocity 12. acceleration (2.3) 13. average acceleration 14. acceleration due to gravity 15. free fall 16. terminal velocity 17. centripetal acceleration (2.4) 18. projectile motion (2.5) For each of the following items, fill in the number of the appropriate Key Term from the preceding list. b. _____ Difference between final and initial velocities divided by time
Consider the following combinations of signs and values for the velocity and acceleration of a particle with respect to a one-dimensional x-axis: Velocity Acceleration a. Positive Positive b. Positive Negative c. Positive Zero d. Negative Positive e. Negative Negative f. Negative Zero g. Zero Positive h. Zero Negative Describe what the particle is doing in each case and give a real-life example for an automobile on an east-west one-dimensional axis, with east considered the positive direction.
Galileo thought about whether acceleration should be defined as the rate of change of velocity over time or as the rate of change in velocity over distance. He chose the former, so lets use the name vroomosity for the rate of change of velocity over distance. For motion of a particle on a straight line with constant acceleration, the equation v = vi + at gives its velocity v as a function of time. Similarly, for a particles linear motion with constant vroomosity k, the equation v = vi + kx gives the velocity as a function of the position x if the particles speed is vi at x = 0. (a) Find the law describing the total force acting on this object of mass m. Describe an example of such a motion or explain why it is unrealistic for (b) the possibility of k positive and (c) the possibility of k negative.
Find the following for path B in Figure 3.54: (a) the total distance traveled, and (b) the magnitude and direction of the displacement from start to finish.
An athlete is training on a 100 m long linear track. His motion is described by the graph of his position vs. time, below. For each segment of the graph, find the magnitude and direction of the athlete's velocity. magnitude vA _______ m/s direction vA(Pick from the following choices)- Positive x- Negative x- The magnitude is zero magnitude vB _______ m/s direction vB(Pick from the following choices)- Positive x- Negative x- The magnitude is zero magnitude vC _______ m/s direction vC(Pick from the following choices)- Positive x- Negative x- The magnitude is zero magnitude vD _______ m/s direction vD(Pick from the following choices)- Positive x- Negative x- The magnitude is zero
A rabbit is moving in the positive x-direction at 1.90 m/s when it spots a predator and accelerates to a velocity of 10.9 m/s along the positive y-axis, all in 1.80 s. Determine the x-component and the y-component of the rabbit's acceleration. (Enter your answers in m/s2. Indicate the direction with the signs of your answers.) b) y-component m/s^2
A hot air balloon is moving vertically upwards at a constant rate of 9.0 m/s. As the balloon rises, a package is dropped from the balloon and it takes 5 s to hit the ground. How far did the package fall? Make sure to include a diagram of the physical situation, label know and unknown quantities with units, coordinate system. Please use grade 12 kinematics and label the variables as v1, v2, a (Acceleration), t (time), d (displacement) Thanks!
3.) This is differential Calculus subject. A PARTICLE IS MOVING ALONG A HORIZONTAL LINE ACCORDING TO THE GIVEN EQUATION.The Equation is S = t^3 - 9t^2 + 15t ; t>=0.where (s) meters is the directed distance of the particle from the originat (t) seconds. where (v) meters per second is the instantaneous acceleration of the particle. 1. FIND (v) AND (a) IN TERMS OF (t).2. MAKE A TABLE THAT GIVES A Description of THE POSITION AND MOTION of the particle, include in the table the intervals of time when the PARTICLE IS MOVING TO THE LEFT AND RIGHT include in the table when the VELOCITY IS INCREASING AND DECREASING include in the table when the SPEED IS INCREASING AND DECREASING include in the table the POSITION OF THE PARTICLE with respect to the origin during these intervals of time. and Show the BEHAVIOR OF THE MOTION
Position of a linearly moving particle s = (t3 - 8.625t2 - 22.125t + 11.625) m. When t is in seconds and t = 16.125, calculate the average velocity of the particle, its instantaneous velocity, the instantaneous acceleration, the total distance it travels. Also, draw schematically the trajectory it follows during its movement.
A rabbit is moving in the negative x-direction at 1.50 m/s when it spots a predator and accelerates to a velocity of 12.7 m/s along the positive y-axis, all in 1.80 s. Determine the x-component and the y-component of the rabbit's acceleration. (Enter your answers in m/s2. Indicate the direction with the signs of your answers.) (a) x-component m/s2 (b)y-component m/s2
In a motion along a projectile, which among this statement is WRONG? A. Break the components in to two, the x- and the y-components. B. Solve the problem independently, motion along x and motion along y. C. Vx is constant, thus ax=0. D. None of the above.
For projectile motion problems, the horizontal and vertical components of the motion of a projectile can be analyzed separately. Which of the following is TRUE about the horizontal component of its motion?a. The horizontal component of the acceleration is constant and is equal to -9.81 m/s^2b. The motion is uniformc. The horizontal component of the velocity varies with positiond. The motion is uniformly accelerated