# Answer to Question #73898 in Other Physics for Abdulbais

Question #73898

Vf = 10 ms-¹+2ms-²×5sec . I know it is from equations of motion but I have a question: Vi is 10 Ms minus 1 but when acceleration will multiply with time it will become 10 Ms minus 2 so how can Vi and acceleration be added. They have different powers.

Expert's answer

The unit of at is

[at]=[a][t]=m/s^2 s=m/s.

But this is the unit of velocity! Thus, they have the same powers.

[at]=[a][t]=m/s^2 s=m/s.

But this is the unit of velocity! Thus, they have the same powers.

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