Question

car travels 30 m toward east, then it takes turn and travels 40 m towards north. It takes 50 seconds. Its average velocity is:....​

Answer 1

Answer:

1m/s

Explanation:

Total displacement would be the Hypotenuse of the triangle so formed =

$\sqrt{ 40x^{2} + 30x^{2}$ =  50

Total time= 50 seconds

Average velocity = 50/50 = 1 m/s

Hope this helps!

Answer 2

Given: A car travels 30 m toward east, then it takes turn and travels 40 m towards north in 50 seconds.

To find:  Its average velocity.

Solution:

• When a body moves, its position changes with time.
• Velocity is the distance travelled divided by the time taken.

• Average velocity is the total distance covered divided by the time taken for the entire journey.
• It is a vector quantity.

$v_{avg} = \frac{distance}{time}$

• Here, the total distance covered is,

        $30m + 40m = 70m$

• The total time taken is 50s.

• Hence,

        $v_{avg} = \frac{70m}{50m}$

                $= 1.4ms^{-1}$

• The average velocity can be positive or negative depending upon the sign of the displacement and in this case, it is positive.

Therefore, the average velocity of the car is 1.4 ms⁻¹.