Answer:
P = 68.125 kW
P startup = 43.05 kW
Explanation:
Describing the motion of an object can be difficult to do and using graphs help make motion easier to understand. Motion is a ch
ange in position measured by distance and time. Speed tells us the rate at which an object moves. Speed graphs are distance-time graphs; sometimes people label them as position-time graphs as well. Time is plotted on the X-axis and distance or position on the Y-axis of a line graph.
A distance-time graph tells us how far an object has moved with time.
• The steeper the graph, the faster the motion.
• A horizontal line means the object is not changing its position. It is not moving, and it is at rest.
• A downward sloping line means the object is returning to the start.
Use the text and the graphs above to choose all of the correct answers concerning speed?
In both graphs, speed will be measured in meters/second.
In graph A, the object travelled a distance of 40 meters in 4 seconds
The total distance travelled by the object in graph B is greater than the object in graph A.
In graph B, the object is at rest for 5 seconds.
The object in graph B was moving at a greater speed than the object in graph A
A distance-time graph tells us how far an object has moved with time.
• The steeper the graph, the faster the motion.
• A horizontal line means the object is not changing its position. It is not moving, and it is at rest.
• A downward sloping line means the object is returning to the start.
Use the text and the graphs above to choose all of the correct answers concerning speed?
In both graphs, speed will be measured in meters/second.
In graph A, the object travelled a distance of 40 meters in 4 seconds
The total distance travelled by the object in graph B is greater than the object in graph A.
In graph B, the object is at rest for 5 seconds.
The object in graph B was moving at a greater speed than the object in graph A
2 answers:
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Complete Question
The complete question is shown on the first uploaded image
Answer:
The strain experienced by the specimen is 0.00116 which is option A
Explanation:
The explanation is shown on the second uploaded image
Answers:
A. A car driving at steady speed on a straight and level road.
B. A car driving at steady speed up a 10∘ incline.
Explanation:
An object is said to be in an inertial reference frame if the net force acting on the object is zero. According to Newton's second law, this also means that the acceleration of the object is also zero:
Since F=0, a=0 as well.
Let's now analyze each case.
A. A car driving at steady speed on a straight and level road. --> YES: this is an inertial reference frame, because the car is keeping a constant speed and a constant direction, so its velocity is not changing, and its acceleration is zero.
B. A car driving at steady speed up a 10∘ incline. --> YES: this is an inertial reference frame, because the car is keeping a constant speed and a constant direction, so its velocity is not changing, and its acceleration is zero.
C. A car speeding up after leaving a stop sign. --> NO: this is not an intertial reference frame, because the car is speeding up, so it is accelerating.
D. A car driving at steady speed around a curve. --> NO: this is not an inertial reference frame, because the car is changing direction, therefore its velocity is changing and so the car is accelerating.
So the only two choices which are correct are A and B.