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?
Homework Answers
As the value of acceleration is given as 3, acceleration is not changing. So acceleration is constant.
As acceleration along X axis is zero. Velocity along X axis is not changing. So Velocity along X axis is constant.
We Know we can have acceleration value when velocity changes. Now as the acceleration is given along Y axis velocity must be changing along Y axis. So velocity is not constant along Y axis.
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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...
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
both questions The diagram below shows the x-y position of a object every 4 seconds starting...
both questions
The diagram below shows the x-y position of a object every 4 seconds starting att O. The distance between gridlines is 10 meters What is true of the x acceleration? it is negative What is true of the y acceleration? ISelect What is the best estimate of the y-velocity at t-10s? Select Please remind yourself how to represent velocities and accelerations on motion diagrams 16 12 D Question 3 A car travels around a circular racetrack at a...
For an object is moving with constant positive acceleration, which of the following statements is true?...
For an object is moving with constant positive acceleration, which of the following statements is true? [Enter all correct answers eg. B or AC or ABC or ...] A) The position of the object must also be positive B) The velocity of the object must also be positive C) The velocity of the object must be zero D) The velocity of the object must be continually changing by the same amount each second E) None of the above Please explain.
Which of the following situations is impossible? An object has velocity directed cast and acceleration directed...
Which of the following situations is impossible? An object has velocity directed cast and acceleration directed west. An object has velocity directed cast and acceleration directed east. An object has zero velocity but non-zero acceleration. An object has constant non-zero acceleration and changing velocity. An object has constant non-zero velocity and changing acceleration. An object is thrown upwards with a speed of 16 m/s. How long does it take it to reach a height of 7.0 m on the way...
An object is moving in the X-Y plane. At time t_1 the direction of its velocity,...
An object is moving in the X-Y plane. At time t_1 the direction of its velocity, v and acceleration, a are: Direction of v is in the negative X direction Direction of a is in the positive Y direction At time t_1, the magnitude of the velocity of the object is _____. Select increasing, decreasing or constant. A. increasing B. decreasing C. constant At time t, the direction of the velocity of the object is _____. Select changing or not...
Suppose the initial velocity of a particle is given by v(O)=(-1,0,0) and the acceleration is given...
Suppose the initial velocity of a particle is given by v(O)=(-1,0,0) and the acceleration is given by a(t)=2cos 2t i-2 sin 2t j+2tk. (1) Find the velocity vector function, v(t). (3 Marks) Find the scalar normal component of acceleration, at trī. (7 Marks)
Part c: What is the x component of the car's acceleration vector at 11 s? Express...
Part c:
What is the x component of the car's acceleration vector at 11
s?
Express your answer with the appropriate units.
Part d
What is the y component of the car's acceleration vector at 11
s?
Express your answer with the appropriate units.
Course Home <Chapter 4 Homework Problem 4.10 4 of 18 Review Part A You have a remote-controlled car that has been programmed to have velocity(-3ti + 2t2j) m/s, where t is in s At t 0s,...
Can a vector have a component equal to zero and still have nonzero magnitude? A component...
Can a vector have a component equal to zero and still have nonzero magnitude? A component is made up of a magnitude and distance, so if i have (3m, 0degrees) i have a vector moving in the x direction for tree meters, it is going in the zero degree direction for 3 meters. And if i have a component (0 , 45 degrees), i have no velocity going towards 45 degrees. I tried answering "No, because another component of the...
4) (5 pts) Suppose that a car traveling to the west (or negative x-direction) begins to...
4) (5 pts) Suppose that a car traveling to the west (or negative x-direction) begins to slow down as it approaches a traffic light. Which of the following statements about its acceleration is correct? a. The acceleration is toward the east b. The acceleration is zero C. Since the car is slowing down, the acceleration is negative d. The acceleration is toward the west. 5) (10 pts) Sketch a graph of position, velocity, and acceleration vs. time for the car...
11-13 The z-component of a vector can be (+), (-), or zero A True B false...
11-13
The z-component of a vector can be (+), (-), or zero A True B false if A is perpendicular to B, then B middot A = 0 A True B False The x-component of a vector can be (+), (-), or zero A True B False The scalar (or dot) product of two vectors can be (+), (-) or zero A True B False If A = B times C and C = 16j, then Ay = 0 A...
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
both questions
The diagram below shows the x-y position of a object every 4 seconds starting att O. The distance between gridlines is 10 meters What is true of the x acceleration? it is negative What is true of the y acceleration? ISelect What is the best estimate of the y-velocity at t-10s? Select Please remind yourself how to represent velocities and accelerations on motion diagrams 16 12 D Question 3 A car travels around a circular racetrack at a...
Which of the following situations is impossible? An object has velocity directed cast and acceleration directed west. An object has velocity directed cast and acceleration directed east. An object has zero velocity but non-zero acceleration. An object has constant non-zero acceleration and changing velocity. An object has constant non-zero velocity and changing acceleration. An object is thrown upwards with a speed of 16 m/s. How long does it take it to reach a height of 7.0 m on the way...
An object is moving in the X-Y plane. At time t_1 the direction of its velocity, v and acceleration, a are: Direction of v is in the negative X direction Direction of a is in the positive Y direction At time t_1, the magnitude of the velocity of the object is _____. Select increasing, decreasing or constant. A. increasing B. decreasing C. constant At time t, the direction of the velocity of the object is _____. Select changing or not...
Suppose the initial velocity of a particle is given by v(O)=(-1,0,0) and the acceleration is given by a(t)=2cos 2t i-2 sin 2t j+2tk. (1) Find the velocity vector function, v(t). (3 Marks) Find the scalar normal component of acceleration, at trī. (7 Marks)
Part c:
What is the x component of the car's acceleration vector at 11
s?
Express your answer with the appropriate units.
Part d
What is the y component of the car's acceleration vector at 11
s?
Express your answer with the appropriate units.
Course Home <Chapter 4 Homework Problem 4.10 4 of 18 Review Part A You have a remote-controlled car that has been programmed to have velocity(-3ti + 2t2j) m/s, where t is in s At t 0s,...
4) (5 pts) Suppose that a car traveling to the west (or negative x-direction) begins to slow down as it approaches a traffic light. Which of the following statements about its acceleration is correct? a. The acceleration is toward the east b. The acceleration is zero C. Since the car is slowing down, the acceleration is negative d. The acceleration is toward the west. 5) (10 pts) Sketch a graph of position, velocity, and acceleration vs. time for the car...
11-13
The z-component of a vector can be (+), (-), or zero A True B false if A is perpendicular to B, then B middot A = 0 A True B False The x-component of a vector can be (+), (-), or zero A True B False The scalar (or dot) product of two vectors can be (+), (-) or zero A True B False If A = B times C and C = 16j, then Ay = 0 A...
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