Pressure 0.0 / 5 PhysicsForces and MotionGCSEEdexcel Created by: DaniellaCreated on: 29-04-18 15:45 acceleration The amount by which speed increases in one second 1 of 21 Atmospheric pressure Pressure caused by the collisions of air molecules that produce a force on an area 2 of 21 Average speed The total distance traveled in the total time taken for a complete journey 3 of 21 Centre of gravity The point in an object where the force of gravity seems to act 4 of 21 Centre of mass The point of an object where the mass of an object seems to act 5 of 21 Compressed Squashed into a smaller space 6 of 21 Density The mass of a material in a certain volume 7 of 21 Distance-time graph A graph that shows how far an object moves each second 8 of 21 Gas pressure The force exerted by air particles when they collide with a surface 9 of 21 Incompressible Cannot be compressed (squashed) 10 of 21 Instantaneous speed The speed at a particular moment 11 of 21 Law of moments An object is in equilibrium if the clockwise moments equal anticlockwise moments 12 of 21 Liquid pressure The pressure produced by the collisions of particles in a liquid 13 of 21 Metres per second A unit of speed 14 of 21 Moment A measure of the ability of a force to rotate an object about an pivot 15 of 21 Newton metres The unit of moment 16 of 21 Newtons per metre squared A unit of pressure 17 of 21 Pivot The point about which a lever or see-saw balances 18 of 21 Pressure A force exerted on a certain area 19 of 21 Relative motion The difference between the speeds of two moving objects, or of a moving and stationary object 20 of 21 Speed A measure of how far something travels in a given time 21 of 21

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