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Foundation test class 8 physics and biology

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Questions and Answers

How is acceleration calculated?

Dividing change in velocity by time

Why is acceleration considered a vector quantity?

Because it has both magnitude and direction

What is the definition of velocity?

The rate at which an object changes its position

What does uniform motion refer to?

<p>Motion with constant speed and direction</p> Signup and view all the answers

How is acceleration defined?

<p>The rate at which an object changes its speed</p> Signup and view all the answers

What is the characteristic of an object in uniform motion?

<p>Constant speed and direction</p> Signup and view all the answers

What type of quantity is velocity?

<p>Vector quantity</p> Signup and view all the answers

How is displacement related to velocity?

<p>Displacement is the change in position of an object over time</p> Signup and view all the answers

Study Notes

Motion and Acceleration

  • Acceleration is calculated as the rate of change of velocity, often expressed as Δv / Δt, where Δv is the change in velocity and Δt is the time over which the change occurs.
  • Acceleration is considered a vector quantity because it has both magnitude (amount of movement) and direction, which means it can be described in terms of its size and direction.

Velocity

  • Velocity is defined as the rate of change of an object's position with respect to time, often expressed as displacement per unit time.
  • Velocity is a vector quantity, having both magnitude (speed) and direction.

Uniform Motion

  • Uniform motion refers to the motion of an object at a constant velocity, meaning the object moves at a constant speed in a straight line.
  • The characteristic of an object in uniform motion is that it maintains a constant velocity, with no acceleration or deceleration.

Displacement and Velocity

  • Displacement is related to velocity in that it is the total distance traveled by an object in a specific direction, whereas velocity is the rate of change of that displacement.

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