acceleration: the rate of the change of velocity. it can be caluclated from the gradient of a velocitytime graph.
Speed is defined as the distancetravelledperunittime. If the speedofsomethingischanging, it is accelerating. The acceleration of free fall near to the earth is constant.
Velocity is the speed in a given direction
Acceleration is the change in velocity per unit time
Acceleration is the change in veloocity divided by time taken (a=v-u/t)
Weight is the force exerted on an object by gravity and is measured in newtons
Weight=mass x gracitational feild strength
The weight of an object acts at one point of the object which is referred to as its centre of gravity or centre of mass
