# Objects A and B are at the origin. If object A moves to #(-2 ,2 )# and object B moves to #(-5 ,-6 )# over #2 s#, what is the relative velocity of object B from the perspective of object A?

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The relative velocity of object B from the perspective of object A is (-1.5 m/s, -4 m/s).

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- What is the projection of #<5,8,3 ># onto #<2,4,-2 >#?
- Objects A and B are at the origin. If object A moves to #(-3 ,-1 )# and object B moves to #(-7 ,8 )# over #3 s#, what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.
- Two bodies of masses #m1# and #m2# are separated by a distance #R#.The distance of the centre of mass of the bodies from the mass #m1# is #A.(m2R)/(m1+m2)#. #B(m1R)/(m1+m2)# #C. (m1m2R)/(m1+m2) ?
- What is the projection of #<-5,2,8># onto #<8,-3,3 >#?
- What is the dot product of #<3,-7,6 ># and #<4,1,7 >#?

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