Linear Motion | Grade 10 Physics | Mechanics

At the end of linear motionMotion is the act of changing location from one place to ano... course, you should be able to:

1. Describe the terms used in mechanics.
2. Demonstrate the use of equations of uniformly accelerated motionMotion is the act of changing location from one place to ano... to solve problems
3. Interpret graphical representation of distance-time, Displacement -time, speed-time, velocity-time and acceleration-time.
4. Investigate the consequences of over speedingSpeeding is the act or practice of exceeding the speed limit...
5. Describe the acceleration of free fall for a body near the earth.
6. Describe qualitatively the motionMotion is the act of changing location from one place to ano... of bodies falling in a uniform gravitational fieldGravitational Field is the region of space surrounding a bod... with and without air resistanceResistance is any mechanical force that tends to retard or o... More

The linear motionMotion is the act of changing location from one place to ano... involves both scalar and vector quantities

The direction of vector quantities, as part of one-directional motionMotion is the act of changing location from one place to ano... course, can be better described by designating a coordinate system within the reference frame. This is a simple coordinate system consisting of a one-dimensional coordinate line. In general, when describing horizontal motionMotion is the act of changing location from one place to ano..., one to the right is usually considered positive, and the one to the left is considered negative.

With vertical motionMotion is the act of changing location from one place to ano..., the upwards one is usually positive and the downward movement is negative. In some cases, however, as with the aeroplane, it can be more convenient to switch the positive and negative directions. For example, if you are analysing the movement of falling objects, it can be useful to define downwards as the positive direction.

If people in a race are running to the left, it is useful to define left as the positive direction. It does not matter as long as the system is clear and consistent. Once you assign a positive direction and start solving a problem, you cannot change it.