Determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false. The velocity and acceleration vectors of a moving object are always perpendicular.

Determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false. The velocity and acceleration vectors of a moving object are always perpendicular.

Name: Determine whether the statement is true or false. If it is false, expl
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Description: Determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false. The velocity and acceleration vectors of a moving object are alw

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter3: Two-dimensional Kinematics

Section: Chapter Questions

Problem 7PE: (a) Repeat the problem two problems prior, but for the second leg you walk 20.0 m in a direction...

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(a) Repeat the problem two problems prior, but for the second leg you walk 20.0 m in a direction 40.0° north of east (which is equivalent to subtracting B from A that is, to finding R=AB ). (b) Repeat the problem two problems prior, but now you first walk 20.0 m in a direction 40.0° south of west and then 12.0 m in a direction 20.0° east of south (which is equivalent to subtracting A from B that is, to finding R=BA=R ). Show that this is the case.
Figure OQ4.1 shows a bird's-eye view of a car going around a highway curve. As the car moves from point 1 to point 2, its speed doubles. Which of the vectors (a) through (e) shows the direction of the cars average acceleration between these two points?
When there is no air resistance what best describes the vectors of a projectile in motion: a.The acceleration vector and velocity vector are both constant magnitude. b.The acceleration vector is constant magnitude and perpendicular to the trajectory. The velocity vector is at a tangent to the trajectory c.The acceleration vector is constant and points straight down. The velocity vector is perpendicular to the trajectory d.The acceleration vector is constant and points straight down. The velocity vector is at a tangent to the trajectory
A ball is thrown from a high window. The arc path that it takes is a result of the combination of its horizontal and vertical motions. Which statement describes the acceleration of the ball? O The ball accelerates horizontally away from the building. The ball accelerates upward away from the ground. The ball does not accelerate. The ball accelerates vertically downward toward the ground.
The vector r indicates the instantaneous displacement of a projectile from the origin. At the instant when the projectile is at r, its velocity and acceleration vectors are v and a. Which statement is correct? a is always perpendicular to v,. a. b. v is always perpendicular to r. a is always perpendicular to r. a is always perpendicular to v,. d. a is always perpendicular to v. e. Clear my choice
When there is air resistance present how to the velocity and acceleration vectors behave? a.The acceleration and velocity vectors are both constant magnitude but continually change direction. b.The acceleration vector is constant and points straight down. The velocity vector is at a tangent to the trajectory c.The acceleration vector is perpendicular to the trajectory and the velocity vector is at a tangent to it. d.The acceleration changes throughout the flight with its x-component opposite the direction of motion. The velocity vector is at a tangent to the trajectory
A stone is thrown with an initial velocity of 100 ft/s upward at 60 degrees to the horizontal. a. Compute the velocity of the stone when it is 50ft horizontally from its initial position. b. Compute the normal acceleration when it is 50ft horizontally from its position. c. Compute the radius of curvature of its path where it is 50ft horizontally from its position.
When there is no air resistance what best describes the vectors of a projectile in motion O The acceleration vector and velocity vector are both constant magnitude. The acceleration vector is constant and points straight down. The velocity vector is perpendicular to the trajectory O The acceleration vector is constant magnitude and perpendicular to the trajectory. The velocity vector is at a tangent to the trajectory O The acceleration vector is constant and points straight down. The velocity vector is at a tangent to the trajectory
a. Can a vector have nonzero magnitude if a component is zero?If no, why not? If yes, give an example.b. Can a vector have zero magnitude and a nonzero component?If no, why not? If yes, give an example.
At the beginning of a 3.0-h plane trip, you are traveling due north at 192 km/h. At the end, you are traveling 239 km/h in the northwest direction (45° west of north). a. Which of the following are the initial and final velocity vectors? SEE ATTACHMENTS b. Find the magnitude of the change in velocity. anser in km/h c. Find the change in direction of your velocity. Enter the angle in degrees where negative indicates north of west and positive indicates south of west. answer in degrees d. What is the magnitude of your average acceleration during the trip? answer in km/h^2
A stone is thrown with an initial velocity of 100fps upward at 60 degrees to the horizontal. a. Compute the velocity of the stone when it is 50ft horizontally from its initial position. b. Compute the normal acceleration when it is 50ft horizontally from its position. c. Compute the radius of curvature of its path where it is 50ft horizontally from its position.
A rock was thrown horizontally from a 100.0 m high cliff. It strikes the ground 90.0 m from the base of the cliff. a) At what speed was it thrown? b) How long did it take to hit the ground. c) Neglecting wind resistance, which component of velocity is affected by gravity VERTICAL or HORIZONTAL? d) Sketch the trajectory of the rock as it falls to the ground and include the velocity vector at the beginning, midway down, and just before striking the ground. e) After you determine the total time in the air, you can then determine the final vertical velocity vector combined with the horizontal velocity determined earlier. Use these vectors to determine the resultant velocity vector just before landing. Recall using Pythagorean theorem to find the magnitude of the velocity vector and trigonometry for the angle below the horizontal that the resultant vector strikes at.