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CIE Physics

Is time a vector or scalar quantity? Why?
Original post by Vertigo3729
Is time a vector or scalar quantity? Why?

As far as we know, a scalar. Because it's one dimensional.
Original post by RogerOxon
As far as we know, a scalar. Because it's one dimensional.

True, but I was solving a past paper question the other day (which I will attach below):
When a force F moves its point of application through a displacement s in the direction of the force, the work W done by the force is given by W = F s.
How many vector quantities and scalar quantities does this equation contain?
A one scalar quantity and two vector quantities
B one vector quantity and two scalar quantities
C three scalar quantities
D three vector quantities

According to the mark scheme, the correct answer is A. We know energy/work done is a scalar, so the remaining two (force and time) have to be vectors.
Original post by Vertigo3729
True, but I was solving a past paper question the other day (which I will attach below):
When a force F moves its point of application through a displacement s in the direction of the force, the work W done by the force is given by W = F s.
How many vector quantities and scalar quantities does this equation contain?
A one scalar quantity and two vector quantities
B one vector quantity and two scalar quantities
C three scalar quantities
D three vector quantities

According to the mark scheme, the correct answer is A. We know energy/work done is a scalar, so the remaining two (force and time) have to be vectors.

The remaining two are force and displacement. Both are vectors.
Original post by Stonebridge
The remaining two are force and displacement. Both are vectors.

Oh, my bad. I read the question wrong. Thanks!

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