The expression x usually means a) the speed in the x-direction. b) any unknown d

ID: 1406069 • Letter: T

Question

The expression x usually means

a) the speed in the x-direction.

b) any unknown distance in the x-direction

c) the displacement in the x-direction.

d) an interval in the x-direction.

The formula (x1 xo) / (t1 to) describes

A) the average x-direction acceleration in time interval t1 to.

B) the instantaneous x-direction acceleration throughout the time interval t1 to.

C) the average x-direction velocity in time interval t1 to.

D) the instantaneous x-direction velocity throughout the time interval t1 to.

The expression x usually means: c) the displacement in the x-direction.

Speed is equal to (x)/(t)

x shows the amount of chnage in x. (So distance is known)

Interval is like (x1,x2)

The formula (x1 xo) / (t1 to) describes: the average x-direction velocity in time interval t1 to.

avergae accleration is (v1 vo) / (t1 to)

the instantaneous x-direction acceleration at any time t is dv/dt

the instantaneous x-direction velocity at any time is dx/dt

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