# How to solve Kinematics problems

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Here are some good points on How to solve Kinematics problems
Motion in a Two dimensional Plane

• Select a coordinate system and resolve the initial velocity vector into x and y
components.
• Find out acceleration in each direction and solve in each direction according to one rectilinear motion equation.
• if the acceleration is in vertical direction only.Follow the techniques for solving constant-velocity problems to analyze the horizontal motion. Follow the techniques for solving constant-acceleration problems to analyze the vertical motion. The x and y motions share the same time of flight t.
• There might be question about trajortory in the Problem ,find out the motion in x and y direction with respect to time from previous point.And then find the value of t from one equation and then put that value in another equation to find out the equation of trajactory

Motion in a Three dimensional Plane

• Select a coordinate system and resolve the initial velocity vector into x , y and z components
• Find out acceleration in each direction and solve in each direction according to one rectilinear motion equation.

Uniform Circular Motion

• Draw a simple, neat diagram of the system.
• Firstly consider the origin of the forces acting on the each object.To do this find out the field forces acting on the each object.Wherever contact in available account the contact force carefully
• Find out the force acting on the body.The resultant force should provide the required centrepatal required for Circular motion
• Centripetal force$F_{C}=\frac{mv^2}{R}$ will give the velotiy accordingly.

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a stone is dropped from the top of a tower such that it covers half of its length innthe last 2seconds of its journey,find the height of the towe?