[" 13.Point A moves uniformly.with velocity "v" so that the vector "v" is "],[" continually "aimed" at point "B" which in its turn moves rectilinearly "],[" and uniformly with velocity "u

Point A moves uniformly with velocity nu so that the vector v is continually "aimed" at point B which in its turn moves rectilinearly and uniformly with velocity upsilon lt nu . At the initial moment of time v_|_u and the points are separated by a distance l . How soon will the points converge?

A point moves rectilinearly with deceleration whose modulus depends on the velocity v of the particle as alpha=ksqrtv , where k is a positive constant. At the initial moment the velocity of the point is equal to V_0 . What distance will it take to cover that distance?

A point moves rectilinearly with deceleration whose modulus depends on the velocity v of the particle as alpha=ksqrtv , where k is a positive constant. At the initial moment the velocity of the point is equal to V_0 . What distance will it take to cover that distance?