What is the speed of an object that travels from (4,-7,1) to (-1,9,3) over 6 s?

1 Answer
Jan 29, 2016

Velocity v=2.81ms^-1

Explanation:

Well, first we need to find the displacement of the object.

The initial point is (4,-7,1) and the final point is (-1,9,3)
So, to find the least displacement, we use the formula
s=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2}

Taking the initial points as that of x_1 and so on, with the final points as the other, we find s=16.88m

Now, the total time taken for this transit is 6s
So, the velocity of the object in this transit would be 16.88/6=2.81ms^-1