Yes - the graph of displacement/force was a straight line.

No - the graph goes below the x axis and is therefore not valid.

Yes, because Hooke's law is always true.

No - the gradient was not equal to the stiffness.

Hooke's law is true for all springs, in all circumstances.

Hooke's law is true for some springs, and only for small deviations from the equilibrium position.

Hooke's law is true but only for stretching springs; it is not valid for compression.

Hooke's law is true for some springs, and only for large deviations from the equilibrium position.

Linear Oscillatory Motion (In 1A Folder)

Collisions and Car Crashes #2 (In 1A Folder)

Linear Plot with Errors (In 1A Folder)

Collisions and Car Crashes #1 (In 1A Folder)

Vernier Logger Pro (On Desktop)

An inelastic collision is one in where the total momentum is conserved.

An inelastic collision is one where the two objects have the same final velocity - this is the minimum kinetic energy condition.

An inelastic collision is one where the total kinetic energy is not conserved, but the final kinetic energy is above the minimum possible value.

An inelastic collision is one in where the total momentum is not conserved, but the final momentum is above the minimum possible value.

A perfectly inelastic collision is one for which the kinetic energy after the collision is not conserved, but is above the minimum possible value.

A perfectly inelastic collision is one for which the kinetic energy after the collision is the minimum possible value.

A perfectly inelastic collision is one for which the momentum after the collision is the minimum possible value.

A perfectly inelastic collision is one for which momentum is conserved.