Please help me with this problem.

Vector v = 2i - 3j

Step-by-step explanation:

The form of a vector with i and j is v = xi + yj

To find a vector from its initial point (a , b) and terminal point (c , d) subtract the coordinates of the initial point from the coordinates of the terminal point

The vector is (c - a , d - b)

∵ The initial point of the vector v is P = (2 , 1)

∵ The terminal point of the vector v is Q = (4 , -2)

∴ Vector v = PQ

- Subtract the coordinates of P from the coordinates of Q

∵ PQ = Q - P

∴ PQ = (4 - 2 , -2 - 1)

∴ PQ = (2 , -3)

- Write it in the form of xi + yj

∴ Vector v = 2i + -3j

∴ Vector v = 2i - 3j

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.