A1,000-kg vehicle traveling 4 m/s eastward collided with another vehicle, at which point it moved 1 m/s westward. what was the vehicle's change in momentum?
a. 1,000 kg • m/s
b. 3,000 kg • m/s
c. 4,000 kg • m/s
d. 5,000 kg • m/s

Change in momentum will be 5000 kg-m/sec

So option (d) will be the correct option

Explanation:

We have given mass of the vehicle m = 1000 kg

Let the velocity in eastward direction is positive so velocity in westward direction will be negative

So velocity in eastward direction

Velocity in westward direction

We know that change in momentum is given by  

So option (d) will be the correct option

c.the charges if the proton and electron and gravity

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation: