How Is the Distance of 262m Calculated for a Particle Accelerating from Rest?

In summary, the problem involves a particle accelerating from a rest position according to a given graph. The question asks for the distance the particle has traveled in the first 20 seconds. The solution is 262m, but the method of obtaining it is unknown. A possible approach would be to use kinematic equations for the different time periods, with an acceleration of 2 m/s^2 for the first 10 seconds, no acceleration for the next 5 seconds, and an acceleration of -3 m/s^2 for the final 5 seconds. Further assistance can be provided once the relevant equations and an attempt at a solution are shown.
  • #1
profcocoon
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Homework Statement



A particle moves from a rest position and accelerates as shown in the graph, which is the distance that the particle has advanced during the first 20 seconds?


Homework Equations





The Attempt at a Solution



The answer in the book is 262m but I have no idea of how that solution was obtained, could you guys help me??
 

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  • #2
profcocoon said:

Homework Statement



A particle moves from a rest position and accelerates as shown in the graph, which is the distance that the particle has advanced during the first 20 seconds?


Homework Equations





The Attempt at a Solution



The answer in the book is 262m but I have no idea of how that solution was obtained, could you guys help me??
Profcocoon, welcome to PF!

From your graph, the acceleration appears to be 2 m/s^2 for the first 10 seconds; then there is no acceleration for the next 5 seconds; and then it accelerates at -3 m/s^2 in the final 5 seconds.

Please list what you think are the relevant equations, and show some attempt at a solution using the relevant kinematic equations over the different time periods. You must show some attempt before we can be of further assistance.
 

1. What is acceleration?

Acceleration is the rate of change of an object's velocity over time. It is a vector quantity, meaning it has both magnitude and direction.

2. How is acceleration calculated?

Acceleration can be calculated by dividing the change in velocity by the change in time. This can also be represented as the derivative of velocity with respect to time.

3. What is the difference between acceleration and velocity?

Velocity is the rate of change of an object's position over time, while acceleration is the rate of change of an object's velocity over time. In simpler terms, velocity tells us how fast an object is moving and in what direction, while acceleration tells us how much an object's velocity is changing over time.

4. What are the units of acceleration?

The units of acceleration are typically meters per second squared (m/s^2) in the SI system. Other units include feet per second squared (ft/s^2) and gravity units (g), with 1 g being equal to 9.8 m/s^2.

5. How does acceleration affect an object's motion?

Acceleration can affect an object's motion in several ways. If an object is accelerating in the same direction as its velocity, it will speed up. If it is accelerating in the opposite direction, it will slow down. If the acceleration is perpendicular to the velocity, it will cause the object to change direction. If there is no acceleration, the object will continue to move at a constant velocity.

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