a car moving east at 45 km/h turns and travels west at 30 km/h. What is the magnitude and direction of the change in velocity?
2 answers:
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.
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Answer:
Option (C) is correct.
Explanation:
Assuming that the hiker starts walking from the origin O as shown in the figure.
First, he walks 200 m west to point A (say), then he walks 100 m north to the final point B (say) as shown in the figure.
The final point B is in the north-west direction, therefore, the resulting point is in the north-west direction.
Hence, option (C) is correct.
