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An object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity? If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no, provide a reason.
Solution
Yes. Even when an object experiences a net zero external unbalanced force, it is possible that the object is travelling with a non-zero velocity. This is possible only when the object has been moving with a constant velocity in a particular direction. Then, there is no net unbalanced force applied on the body. The object will keep moving with a non-zero velocity. To change the state of motion, a net non-zero external unbalanced force must be applied on the object
Similar Questions
The following is the distance-time table of an object in motion:
| Time in seconds | Distance in metres |
| $0$ | $0$ |
| $1$ | $1$ |
| $2$ | $8$ |
| $3$ | $27$ |
| $4$ | $64$ |
| $5$ | $125$ |
| $6$ | $216$ |
| $7$ | $343$ |
$ (a)$ What conclusion can you draw about the acceleration? Is it constant, increasing, decreasing, or zero?
$(b) $ What do you infer about the forces acting on the object?
