Physics unit 5 Forces and Motion

6th January homework

Acceleration

Speeding Up

Deceleration

Slowing down

Displacement

the distance and direction from the start to the end point

Directly proportional

A relationship whereby when one number increases , the other increases at the same rate.

Elastic deformation

When an object stretches or compresses but will return to its original shape and size once any force used to deform it is removed.

Inelastic Deformation

This happens when a material is squashed or compressed and will not return to its original shape and size when the forces are removed.

Moment

the turning effect of a force

Pressure

Force applied per unit area (measured in pascals)

Resultant force

The sum of all forces or overall force acting on an object

Scalar

a quantity that has only magnitude and no direction, such as mass or temperature.

Terminal velocity

The velocity reached when an object us falling under gravity and the forces are unbalanced.

Upthrust

The upward force that a fluid exerts on a body floating in it.

Vector

A quantity the has both magnitude and direction, such as velocity or force.

Velocity

The speed and direction of an object.

Weight

The downward force due to gravitational force.

F = K * E

Force = spring constant * extension

A = (V - U) / T

Acceleration = (final velocity - initial velocity) / time

F = M * A

Force = Mass * Acceleration

M = F * D

Moment of a force = Force * Distance

W = F * S

Work done = Force * Distance

W = M * G

Weight = Mass * Gravitational field strength

P = M * G

Momentum = Mass * Velocity field strength