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## Homework Statement

A net external force acts on an object of mass m. Is this information

sufficient to conclude that

(i) the velocity of the object changes?

(ii) the kinetic energy of the object changes?

(iii) the speed of'the object changes?

Explain your answers in each case.

## Homework Equations

Conservation of momentum.

Conservation of Kinetic Energy.

## The Attempt at a Solution

My solution was that, insufficient information was given to determine velocity as direction of force was not given.

Kinetic Energy and Speed can be found as they are unreliant on direction (KE relying on V^2)

Could anybody tell me if I am on the right track? Or am I way way off?

It seems like a pretty simple question, I just wanted to check if my understanding is correct.

Any help, Much appreciated =)