Physics question! a spacecraft leaves the outskirts of out solar system with mass of 500 tonnes and at a speed of 12000 ms-1 and heads towards the star Alpha Centauri.​

they should be similar or the same

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

answerscientific theory;