Homework Answers
object is moving with constant velocity
hence acceleration a = 0
so net force F = m * a
F = 0 .................... CORRECT ANSWER IS ................ ZERO ........... C
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2. An objec t is moving along a level surface with a constant velocity. The net...
A boy rides a bicycle at a constant velocity. Which of the following about the net...
A boy rides a bicycle at a constant velocity. Which of the following about the net force is true? A. There is a net force acting in the velocity direction B. There is a net force acting opposite to the velocity direction C. The net force is zero D. There is a net force acting perpendicularly to the velocity direction E. None from the above The Daily Post First with the News A passenger standing in a moving bus, facing...
2) Rita is in an elevator that is moving at a constant velocity downward. If the...
2) Rita is in an elevator that is moving at a constant velocity downward. If the elevator now experiences an acceleration so that it speeds up, the normal force Rita experiences A) becomes greater than her weight. B) remains equal to her weight. C) becomes less than her weight, but not equal to zero. D) becomes zero. E) cannot be determined without more information. 11) A rope connects object A (mass 4m) with object B (mass m). (Object A is...
An object is moving forward with a constant velocity. Which statement about this object MUST be...
An object is moving forward with a constant velocity. Which statement about this object MUST be true? A. No forces are acting on the object. B. The net force on the object is in the forward direction. C. The acceleration of the object is in the forward direction. D. The net force on the object is zero.
understanding newton's law 1. An object cannot remain at rest unless which of the following holds? a. The net force act...
understanding newton's law 1. An object cannot remain at rest unless which of the following holds? a. The net force acting on it is zero. b. The net force acting on it is constant and nonzero. c. There are no forces at all acting on it. d. There is only one force acting on it. which one is the answer? there can be more than one answer.... 2. If a block is moving to the left at a constant velocity,...
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...
with reason please. Velocity and Acceleration Vectors An object is moving with an initial velocity along...
with reason please.
Velocity and Acceleration Vectors An object is moving with an initial velocity along the x-axis and a constant acceleration in the second quadrant of the x-y plane as shown. Which one of the following statements about the subsequent motion of the object is true? (a) The velocity of the object never changes magnitude. (b) The velocity of the object never changes direction. (c) The direction of the velocity of the object is never the same as that...
A student measures the velocity of an object moving along a track. At time t =...
A student measures the velocity of an object moving along a track. At time t = 0 s, the object is moving at a constant 4.0 m/s in the positive x-direction. At time t = 3.0 s, the object begins to slow, stops at t = 5.0 s, and then moves in the opposite direction. At t = 6.0 s, the object as reached a speed of -2.0 m/s. It moves at this speed until the student quits taking data...
True or False: For an object of mass m, moving at constant velocity implies a constant,...
True or False: For an object of mass m, moving at constant velocity implies a constant, nonzero, force acting on it. T True F False
An object is moving in the X-Y plane. At time t1 the direction of its velocity,...
An object is moving in the X-Y plane. At time t1 the direction of its velocity, v and acceleration, a are: Direction of v is in the positive X direction Direction of a is in the negative Y direction At time t1, the magnitude of the velocity of the object is _______. Select increasing, decreasing or constant. At time t1, the direction of the velocity of the object is _______. Select changing or not changing. At time t1, the direction...
A child is moving in a straight line along a hallway. The velocity of the child...
A child is moving in a straight line along a hallway. The velocity of the child as a function of time is shown in the graph at right. Which of the following statements is true about the acceleration of the child at time t 4 seconds? Velocity Time, sec (a) I is positive (b) It is zero (c) I is negative (d) It cannot be determined from this graph. 2 Shown at right is a graph of velocity as a...
A boy rides a bicycle at a constant velocity. Which of the following about the net force is true? A. There is a net force acting in the velocity direction B. There is a net force acting opposite to the velocity direction C. The net force is zero D. There is a net force acting perpendicularly to the velocity direction E. None from the above The Daily Post First with the News A passenger standing in a moving bus, facing...
2) Rita is in an elevator that is moving at a constant velocity downward. If the elevator now experiences an acceleration so that it speeds up, the normal force Rita experiences A) becomes greater than her weight. B) remains equal to her weight. C) becomes less than her weight, but not equal to zero. D) becomes zero. E) cannot be determined without more information. 11) A rope connects object A (mass 4m) with object B (mass m). (Object A is...
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...
with reason please.
Velocity and Acceleration Vectors An object is moving with an initial velocity along the x-axis and a constant acceleration in the second quadrant of the x-y plane as shown. Which one of the following statements about the subsequent motion of the object is true? (a) The velocity of the object never changes magnitude. (b) The velocity of the object never changes direction. (c) The direction of the velocity of the object is never the same as that...
A student measures the velocity of an object moving along a track. At time t = 0 s, the object is moving at a constant 4.0 m/s in the positive x-direction. At time t = 3.0 s, the object begins to slow, stops at t = 5.0 s, and then moves in the opposite direction. At t = 6.0 s, the object as reached a speed of -2.0 m/s. It moves at this speed until the student quits taking data...
A child is moving in a straight line along a hallway. The velocity of the child as a function of time is shown in the graph at right. Which of the following statements is true about the acceleration of the child at time t 4 seconds? Velocity Time, sec (a) I is positive (b) It is zero (c) I is negative (d) It cannot be determined from this graph. 2 Shown at right is a graph of velocity as a...
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