Rashmita DeshmukhSticky NoteAverage speed is the scalar quantity which shows the amount of distance covered in a given period of time and is often a very general average of all the speeds that occurred during the journey. Instantaneous Speed on the other hand, is a scalar quantity which represents the speed of the object in a specific point in time.

Rashmita DeshmukhSticky NoteVariables:S= 2.5m/sU= 0m/sv=?A= +9.8m/s^2V^2=U^2+2AStherefore, answer is 7m/s downwards

Rashmita DeshmukhSticky Note2205 JoulesKe=1/2mv^2 - 1/2*mu^2

Rashmita DeshmukhSticky NoteThe kinetic energy was lost in the form of heat and sound energy.

Rashmita DeshmukhSticky NoteReduce the mass of the object M1

Rashmita DeshmukhSticky Note1.8kgs?

Rashmita DeshmukhSticky Note9.8ms^2

Rashmita DeshmukhSticky NoteCombined velocity= 3.230m/s East

Rashmita DeshmukhSticky Note2 mark deconstruction

Rashmita DeshmukhSticky NoteLoose objects are not fastened to a moving car and hence in the event of a sudden deceleration will continue to move at the initial speed due to their inertia.

Rashmita DeshmukhSticky NoteOne safety device used in cars which helps protect people from injury is Airbags. They increase the stopping distance between your head and the steering wheel in the event of a collision and in doing so increase the time and reduce the force felt. This results in less injury for the inertial occupant.

Rashmita DeshmukhSticky NoteThe motorbike is travelling at a constant velocity of 2m/s North

Rashmita DeshmukhSticky NoteThe deceleration occurring in the last 2 seconds is far greater than the acceleration that occurs in the initial 4 seconds of motion.

Rashmita DeshmukhSticky Note1.5 metres per second squared

Rashmita DeshmukhSticky Note40 metres

Rashmita DeshmukhSticky Note18.75ms-2

Rashmita DeshmukhSticky Note4 seconds

Rashmita DeshmukhSticky Note468750 newtons

Rashmita DeshmukhSticky Note20ms-1 east

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