A car travels at a speed of 80 km/h duri...

A car travels at a speed of 80 km/h during the first half of its running time and at 40 km/h during the other half. Find the average speed of the car. (60 km/h)

Text Solution

Verified by Experts

`50(km)/(h)`

Topper's Solved these Questions

GEOMETRICAL OPTICS : REFLECTION
RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (single correct choice type)|27 Videos
GEOMETRICAL OPTICS : REFLECTION
RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (more than one correct choice type)|6 Videos
GEOMETRICAL OPTICS : REFLECTION
RESNICK AND HALLIDAY|Exercise CHECKPOINT|5 Videos
GAUSS' LAW
RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (INTEGER TYPE)|3 Videos
GEOMETRICAL OPTICS : REFRACTION
RESNICK AND HALLIDAY|Exercise Practice questions(Integers)|4 Videos

Similar Questions

Explore conceptually related problems

A car moves at 80km in the first half of total time of motion and at 40km in the later half. Its average speed is

A car travels at the speed of 50 km/h for the first half of the journey and at the speed of 60 km/h for the second half of the journey. What is the average speed of thecar for the entire journey? (A) 54.54 km/h (B) 36.36 km/h (C) 50.5 km/h (D) 45.45 km/h

A covered half of his journey at 20 km/h and rest at 60 km/h. What is the average speed of the man?

A car travels 60km in the first hour , 65km in the second hour , 70km in the third hour, then the average speed of the car is

A car travels along a straight line for first half time with speed 40 km//h and the second half time with speed 60 km//h . Find the average speed of the car.

A car moves 300 km at a speed of 45 km/h and then it increases its speed to 60 km/h to travel another 500 km. Find average speed of car.

A car moves for half of its time at 80 km//h and for rest of time at 40 km//h . Total distance covered is 60km . What is the average speed of the car

RESNICK AND HALLIDAY-GEOMETRICAL OPTICS : REFLECTION -PROBLEMS

A small object is placed 10 cm in front of a plane mirror. If you stan...
Text Solution
|
A car travels at a speed of 80 km/h during the first half of its runni...
Text Solution
|
An object is moving towards a concave mirror of focal length 24 cm. Wh...
Text Solution
|
A ray of light makes an angle of 10^@ with the horizontal and strikes ...
Text Solution
|
Two plane mirrors are placed parallel to each other and 40 cm apart. A...
Text Solution
|
Two plane mirrors are inclined at an angle of 72^(@) . The number of i...
Text Solution
|
A fluorescent lamp of length 1m is placed horizontally at a depth of 1...
Text Solution
|
A concave mirror forms an image of 20 cm high object on a screen place...
Text Solution
|
Two bodies A and B are moveing toward a palne mirror with speed v(A) a...
Text Solution
|
A concave shaving mirror has a radius of curvature of 35.0 cm. It is p...
Text Solution
|
An object is 30.0 cm from a spherical mirror along the central axis. T...
Text Solution
|
The image of a candle flame placed at a distance of 30 cm from a mirro...
Text Solution
|
A converging beam of light rays in incident on a concave spherical ...
Text Solution
|
An object is placed in front of a concave mirror, a three times magnif...
Text Solution
|
A concave shaving mirror has a radius of curvature of 35.0 cm. It is p...
Text Solution
|
The sun (diameter d) subtends an angle theta radian at the pole of a c...
Text Solution
|
A small piece of wire bent into an L shape, with upright and horizonta...
Text Solution
|
Two spherical mirros (convex and concave) having the same focal length...
Text Solution
|
A point sources of light is 60cm from a screen and is kept at the focu...
Text Solution
|
As object is placed exactly midway between a concave mirror of R = 40 ...
Text Solution
|