Answer:
The magnitude and direction of the change in velocity is 75 m/s in west.
Explanation:
Given that,
Velocity of car = 45 km/h in east
Velocity of car = 30 km/h in west
We need to calculate the magnitude of the change in velocity
Using formula of change in velocity
Change in velocity = final velocity - initial velocity
Put the value into the formula
The direction of the the change in velocity is toward west.
Hence, The magnitude and direction of the change in velocity is 75 m/s in west.