Topic 2: Kinematics

2.1 Speed, Velocity and Acceleration Speed is the distance traveled divided by time. Speed = distance traveled/time taken The SI unit of speed is metre per second (m s -1 )

Speed is the distance traveled divided by time.

Speed = distance traveled/time taken

The SI unit of speed is metre per second (m s -1 )

2.1 Speed, Velocity and Acceleration Velocity is the distance traveled in a given direction (or displacement) divided by the time taken. Velocity = displacement/time taken The SI unit of speed is metre per second (m s -1 )

Velocity is the distance traveled in a given direction (or displacement) divided by the time taken.

Velocity = displacement/time taken

The SI unit of speed is metre per second (m s -1 )

2.1 Speed, Velocity and Acceleration Two objects travelling with the same speed but in different directions have different velocities. Since velocity has both magnitude and direction. it is a vector quantity.

Two objects travelling with the same speed but in different directions have different velocities.

Since velocity has both magnitude and direction. it is a vector quantity.

2.1 Speed, Velocity and Acceleration Acceleration is the rate of change of velocity. Acceleration = change in velocity/time taken = (final velocity - initial velocity)/time taken The acceleration is uniform if the rate of change of velocity is constant.

Acceleration is the rate of change of velocity.

Acceleration

= change in velocity/time taken

= (final velocity - initial velocity)/time taken

The acceleration is uniform if the rate of change of velocity is constant.

2.1 Speed, Velocity and Acceleration In linear motion, a body traveled in a straight line. The direction of motion does not change. Any change in the velocity is due to the change in speed. Hence the acceleration is acceleration = Change in speed/time taken

In linear motion, a body traveled in a straight line. The direction of motion does not change. Any change in the velocity is due to the change in speed.

Hence the acceleration is

acceleration = Change in speed/time taken

2.1 Speed, Velocity and Acceleration

2.1 Speed, Velocity and Acceleration When the velocity decreases, the acceleration is negative and the acceleration is known as deceleration or retardation.

When the velocity decreases, the acceleration is negative and the acceleration is known as deceleration or retardation.

2.1 Speed, Velocity and Acceleration

2.1 Speed, Velocity and Acceleration Non-uniform acceleration — the rate of change of velocity is not constant, instead it changes with time

Non-uniform acceleration — the rate of change of velocity is not constant, instead it changes with time

2.1 Speed, Velocity and Acceleration

2.1 Speed, Velocity and Acceleration

2.1 Speed, Velocity and Acceleration

2.1 Speed, Velocity and Acceleration

Practice Questions

Practice Questions