A car travels the first half of a distance between two places at a speed of $30\, km/hr$ and the second half of the distance at $50 \,km/hr$. The average speed of the car for the whole journey is..........$km/hr$
A car travels the first half of a distance between two places at a speed of $30\, km/hr$ and the second half of the distance at $50 \,km/hr$. The average speed of the car for the whole journey is..........$km/hr$
- A
$42.5 $
- B
$40.0$
- C
$37.5 $
- D
$35.0$
Similar Questions
''The magnitude of average velocity is equal to average speed''. This statement is not always correct and not always incorrect. Explain with example.
''The magnitude of average velocity is equal to average speed''. This statement is not always correct and not always incorrect. Explain with example.
One car moving on a straight road covers one third of the distance with $20 \,km/hr $ and the rest with $60\, km/hr$. The average speed is..........$km/hr$
One car moving on a straight road covers one third of the distance with $20 \,km/hr $ and the rest with $60\, km/hr$. The average speed is..........$km/hr$
Write relation between speed and magnitude of velocity.
Write relation between speed and magnitude of velocity.
A motor cyclist travels a certain distance with a uniform speed of $30\, m/s$ and immediately turns back and returns to starting point with a uniform speed $20\, m/s$. Then the average speed of the motor cycle is ..........$m/s$ :-
A motor cyclist travels a certain distance with a uniform speed of $30\, m/s$ and immediately turns back and returns to starting point with a uniform speed $20\, m/s$. Then the average speed of the motor cycle is ..........$m/s$ :-
If a car covers $2/5^{th}$ of the total distance with $v_1$ speed and $3/5^{th}$ distance with $v_2 $ then average speed is
If a car covers $2/5^{th}$ of the total distance with $v_1$ speed and $3/5^{th}$ distance with $v_2 $ then average speed is