A car travels a distance of with speed and then the same distance with speed in the same direction. The average speed of the car is: [2023]

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Solution

Q.
A car travels a distance of $' x'$ with speed $v_{1}$ and then the same distance $' x'$ with speed $v_{2}$ in the same direction. The average speed of the car is: [2023]

Solution

Q.
A car travels a distance of $' x'$ with speed $v_{1}$ and then the same distance $' x'$ with speed $v_{2}$ in the same direction. The average speed of the car is: [2023]

1 $\frac{v_{1} v_{2}}{2 (v_{1} + v_{2})}$

2 $\frac{2 x}{v_{1} + v_{2}}$

3 $\frac{2 v_{1} v_{2}}{v_{1} + v_{2}}$

4 $\frac{v_{1} + v_{2}}{2}$

Ans.
(3)

$V_{avg} = \frac{S + S}{\frac{S}{V_{1}} + \frac{S}{V_{2}}} = \frac{2 V_{1} V_{2}}{V_{1} + V_{2}}$

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Solution

Q. A car travels a distance of 'x' with speed v1 and then the same distance 'x' with speed v2 in the same direction. The average speed of the car is: [2023]

1 v1v22(v1+v2)

2 2xv1+v2

3 2v1v2v1+v2

4 v1+v22

Ans. (3) Vavg=S+SSV1+SV2=2V1V2V1+V2

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Q.
A car travels a distance of $' x'$ with speed $v_{1}$ and then the same distance $' x'$ with speed $v_{2}$ in the same direction. The average speed of the car is: [2023]

1 $\frac{v_{1} v_{2}}{2 (v_{1} + v_{2})}$

2 $\frac{2 x}{v_{1} + v_{2}}$

3 $\frac{2 v_{1} v_{2}}{v_{1} + v_{2}}$

4 $\frac{v_{1} + v_{2}}{2}$

Ans.
(3)

$V_{avg} = \frac{S + S}{\frac{S}{V_{1}} + \frac{S}{V_{2}}} = \frac{2 V_{1} V_{2}}{V_{1} + V_{2}}$