NCEA Level 2 Physics Practice Exam

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If an object is 'released' instead of 'launched', what is its initial velocity?

10 m/s

5 m/s

0 m/s

When an object is described as being 'released', it means that the object is allowed to fall or move freely under the influence of gravity without any initial propulsion force applied to it. In this case, the term "released" implies that the object starts from rest. Therefore, the initial velocity of the object at the moment it is released is 0 m/s.

This situation can be contrasted with the term "launched," which would suggest that the object is given an initial speed or velocity directed in a specific direction. The lack of an initial speed in the case of a release aligns with the definition of initial velocity being zero.

In summary, since 'released' indicates that the object has not been given any initial speed, it is appropriate to conclude that its initial velocity is 0 m/s.

15 m/s