Homework Answers
A. The time rate of change in direction of velocity.
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The normal component of acceleration represents the time rate of change in the direction of the...
The quantity: velocity dot n the normal vector (v dot n) represents: a) the component of...
The quantity: velocity dot n the normal vector (v dot n) represents: a) the component of the velocity tangential to the surface b) the magnitude of the velocity c) the component of the velocity normal to the surface d) the volume flow rate through the surface Please justify your choice explaining the geometric interpretation of the dot product.
The time rate of change of acceleration is known as/erk J·, Assume that an object has...
The time rate of change of acceleration is known as/erk J·, Assume that an object has constant jerk. Derive the equation for (a) its acceleration, (b) its velocity, and (c) its position as a function of time using integration. (d) Find the time-independent kinematic equation for the object's final acceleration as a function of its initial acceleration, initial velocity, final velocity and jerk 8.
Automotive engineers refer to the time rate of change of acceleration as the "jerk." Assume an...
Automotive engineers refer to the time rate of change of acceleration as the "jerk." Assume an object moves in one dimension such that its jerk J is constant. (a) Determine expressions for its acceleration a, (t), velocity v(), and position x(t), given that its initial acceleration, velocity, and position are a, vi, and x, respectively. (Use any variable or symbol stated above as necessary.) a(t) v,(t)
What is a valid definition of acceleration? A. rate of velocity change B. rate of position...
What is a valid definition of acceleration? A. rate of velocity change B. rate of position change C. slope of the position-vs-time graph D. rate of speed change
en an object undergoes non-uniform circular motion, its acceleration vector can be broken into a radial...
en an object undergoes non-uniform circular motion, its acceleration vector can be broken into a radial component and a tangential component. O True O False 10 For non-uniform circular motion, the radial component of the object's acceleration represents the lengthening or shortening of the object's velocity vector. True False 11.1 1 m circular motion, the tangential component of th For non-unifor e object's acceleration represents the change in the direction of the object's velocity vector. True O False
An object undergoes acceleration 2.3i + 3.6j m/s^2 for 10s. At the end of this time,...
An object undergoes acceleration 2.3i + 3.6j m/s^2 for 10s. At the end of this time, its velocity is 33i + 15j m/s. A. what was its velocity at the beginning of the 10s interval? B. By how much did its speed change? C. by how much did its direction change? D. show that the speed change is not given by the magnitude of the acceleration multiplied by the time. Why not?
Suppose the x component of the acceleration is zero and the y component of the acceleration...
Suppose the x component of the acceleration is zero and the y
component of the acceleration is 3. Which of the following is NOT
true?
Suppose the x component of the acceleration is zero and the y component of the acceleration is 3. Which of the following is NOT true? Select the correct answer O all of the above statements are true O xcan be changing if the x component of the initial velocity is not zero O The acceleration...
1. Radial acceleration is due to a) changes in the magnitude of the b) the direction...
1. Radial acceleration is due to a) changes in the magnitude of the b) the direction of the velocity vec- velocity vector c) changes in the direction of the ve- tor d) the magnitude of the velocity vec- locity vector tor 2. The direction of centripetal acceleration is always a) away from the center of the circle c) parallel to the velocity b) towards the center of the circle d) in the direction of velocity 3. Tangential acceleration and radial...
Suppose the x component of the acceleration is zero and the y component of the acceleration...
Suppose the x component of the acceleration is zero and the y component of the acceleration is 3. Which of the following is NOT true? Select the correct answer O The acceleration vector is constant O all of the above statements are true O x can be changing if the x component of the initial velocity is not zero O the y component of the velocity is constant O The x component of the velocity is constant
A particle's position ?⃗ as a function of time ? is given by ?⃗ (?)=??^3?̂ +(??−??4)?̂...
A particle's position ?⃗ as a function of time ? is given by ?⃗ (?)=??^3?̂ +(??−??4)?̂ . where a=5.00 m/s^3, b=3.00 m/s, and c=6.00 m/s^4. At t=2.45 s find: (e)The x-component of velocity. (f)The y-component of velocity. (g)The magnitude of the velocity vector. (h)The direction of the velocity vector. Your answer for this part should be in the range of -180 to 180 degrees. (i)The x-component of the acceleration. (j)The y-component of the acceleration. (k)The magnitude of the acceleration vector....
The quantity: velocity dot n the normal vector (v dot n) represents: a) the component of the velocity tangential to the surface b) the magnitude of the velocity c) the component of the velocity normal to the surface d) the volume flow rate through the surface Please justify your choice explaining the geometric interpretation of the dot product.
The time rate of change of acceleration is known as/erk J·, Assume that an object has constant jerk. Derive the equation for (a) its acceleration, (b) its velocity, and (c) its position as a function of time using integration. (d) Find the time-independent kinematic equation for the object's final acceleration as a function of its initial acceleration, initial velocity, final velocity and jerk 8.
Automotive engineers refer to the time rate of change of acceleration as the "jerk." Assume an object moves in one dimension such that its jerk J is constant. (a) Determine expressions for its acceleration a, (t), velocity v(), and position x(t), given that its initial acceleration, velocity, and position are a, vi, and x, respectively. (Use any variable or symbol stated above as necessary.) a(t) v,(t)
en an object undergoes non-uniform circular motion, its acceleration vector can be broken into a radial component and a tangential component. O True O False 10 For non-uniform circular motion, the radial component of the object's acceleration represents the lengthening or shortening of the object's velocity vector. True False 11.1 1 m circular motion, the tangential component of th For non-unifor e object's acceleration represents the change in the direction of the object's velocity vector. True O False
Suppose the x component of the acceleration is zero and the y
component of the acceleration is 3. Which of the following is NOT
true?
Suppose the x component of the acceleration is zero and the y component of the acceleration is 3. Which of the following is NOT true? Select the correct answer O all of the above statements are true O xcan be changing if the x component of the initial velocity is not zero O The acceleration...
1. Radial acceleration is due to a) changes in the magnitude of the b) the direction of the velocity vec- velocity vector c) changes in the direction of the ve- tor d) the magnitude of the velocity vec- locity vector tor 2. The direction of centripetal acceleration is always a) away from the center of the circle c) parallel to the velocity b) towards the center of the circle d) in the direction of velocity 3. Tangential acceleration and radial...
Suppose the x component of the acceleration is zero and the y component of the acceleration is 3. Which of the following is NOT true? Select the correct answer O The acceleration vector is constant O all of the above statements are true O x can be changing if the x component of the initial velocity is not zero O the y component of the velocity is constant O The x component of the velocity is constant
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