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Concept explainers
(a)
The dimension of the train moving along a flat, straight track.
(a)
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Answer to Problem 1PQ
The motion of the train moving along a flat, straight track is one-dimensional.
Explanation of Solution
The motion of an object can be one-dimensional or multi-dimension and is depending on the path of the object.
- 1. If the motion of an object occurs along a straight line and only one coordinate is required to describe the position of the object, then it is one-dimensional motion.
- 2. If the motion of an object occurs along a curved path and two coordinates are required to describe the position of the object (x-axis and y-axis), then it is a two-dimensional motion.
- 3. If the motion of an object requires three co-ordinates (x, y and z-axes) to describe the position of the object, then it is a three-dimensional motion.
Here, the train is moving in one direction along a flat, straight track. The motion of the train can be explained using one axis, Therefore, the motion of the train moving along a flat, straight track is one-dimensional.
(b)
The dimension of the train that is moving in flat, straight track and then reverses direction.
(b)
![Check Mark](/static/check-mark.png)
Answer to Problem 1PQ
The motion of the train that is moving in a flat, straight track and then reverses direction is one-dimensional.
Explanation of Solution
Here, the train is moving in one direction along a flat, straight track; started to move in the reverse direction along the same straight track. The motion of the train can be explained in one-dimension whether in forward or backward direction.
Therefore, the motion of the train that is moving in a flat, straight track and then reverses its direction is one-dimensional.
(c)
The dimension of the train moves in one direction along a straight, downhill track.
(c)
![Check Mark](/static/check-mark.png)
Answer to Problem 1PQ
The dimension of the train moves in one direction along a straight, downhill track.
Explanation of Solution
Here, the train is moving in one direction along a straight, downhill track. The motion of the train can be explained in one-dimension as the track is downhill but still it is a straight line and the motion of the train can be described using a single axis.
Therefore, the motion of the train moving in one direction along a straight, downhill track is one-dimensional.
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Chapter 4 Solutions
Physics for Scientists and Engineers: Foundations and Connections
- Solve and answer the question correctly please. Thank you!!arrow_forwardSolve and answer the question correctly please. Thank you!!arrow_forwardA spiral transition curve is used on railroads to connect a straight portion of the track with a curved portion. (Figure 1) Part A v = v₁ft/s 600 ft y = (106) x³ If the spiral is defined by the equation y = (106)³, where x and y are in feet, determine the magnitude of the acceleration of a train engine moving with a constant speed of v₁ = 30 ft/s when it is at point x = 600 ft. Express your answer to three significant figures and include the appropriate units. ? a = Value Unitsarrow_forward
- When the motorcyclist is at A, he increases his speed along the vertical circular path at the rate of = (0.3t) ft/s², where t is in seconds. Take p = 360 ft. (Figure 1) Part A 60° Ρ B If he starts from rest at A, determine the magnitude of his velocity when he reaches B. Express your answer to three significant figures and include the appropriate units. v = Value Submit Request Answer ་ Part B ? Units If he starts from rest at A, determine the magnitude of his acceleration when he reaches B. Express your answer to three significant figures and include the appropriate units. 11 ? a = Value Unitsarrow_forwardThe car starts from rest at s = 0 and increases its speed at a₁ = 7 m/s². (Figure 1) Part A = 40 m Determine the time when the magnitude of acceleration becomes 20 m/s². Express your answer to three significant figures and include the appropriate units. ? t = Value Units Part B At what position s does this occur? Express your answer to three significant figures and include the appropriate units. s = Value Submit Request Answer ? Unitsarrow_forwardSolve and answer the question correctly please. Thank you!!arrow_forward
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