Vectorisation of a loop

Is it possible to vectorise this loop? Any help would be greatly appreciated.

% Calculate X(k)
for k = 1:length(T)
X(k) = (sum(Vx(1:k-1).*diff(T(1:k))))+ X1; 
end

% Calculate Y(k)
for k = 1:length(T)
Y(k) = (sum(Vy(1:k-1).*diff(T(1:k))))+ Y1;     
end

Answer 1

[Stephen23]

X = X1+[0;cumsum(Vx(1:end-1).*diff(T))]
Y = Y1+[0;cumsum(Vy(1:end-1).*diff(T))]

[Michael Ng]

Thank you very much for your solution.