[Drag Force]

a force opposing the motion of n object due to fluid (e.g. air) flowing past the onject as it moves

[Acceleration]

Change in velocity per second.

[Elastic potential energy]

energy stored in an elastic object when work is done to change its shape

[Cable]

Two or three insluated ires surrounded by an outer layer of rubber or flexible pastic.

[Circuit Breaker]

a electromagnetic switch that opens and cuts the current off if too much current passes through iy

[Control Rod]

metal rod used to absorb excess fission neutrons in a nuclear reactor so that only one fission neutron per fission on average goes on to produce further fission

[Force]

a force can change the motion of an object in (newtons, N)

[Gravitational field strength]

the force of gravity on an object of mass in 1kg

[kinetic energy]

energy of a moving object due to its motion; kinetic energy=massXspeed(squared)

[Deceleration]

change of velocity per second when an object slows down.