Home
Class 12
PHYSICS
A car travels a distance d on a straight...

A car travels a distance d on a straight road in two hours and then returns to the starting point in next three hours. Its average speed is:-

Text Solution

Verified by Experts

The correct Answer is:
B
`a=-10/11t+10` at maximum speed `a=0`
`10/11t+10`
`rArr t=11` sec
Area under the curve`=1/2 xx11xx10=55`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PALNE

    ALLEN |Exercise MCQ with one or more than one correct Question|1 Videos

  • MOTION IN A PALNE

    ALLEN |Exercise SUBJECTIVE QUESTION|3 Videos

  • MOTION IN A PALNE

    ALLEN |Exercise Exercise-05 [A]|11 Videos

  • KINEMATICS-2D

    ALLEN |Exercise Exercise (O-2)|47 Videos

  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN |Exercise EXERCISE (JA)|4 Videos

Similar Questions

Explore conceptually related problems

A car moving over a straight path, covers a distance d with constant speed of 40 km/hr and then the same distance with speed 60km/hr. The average speed of car is .....

One car moving on a staright road covers one-third of the distance with 20 (km)/(hr) and the rest with 60 (km)/(hr) . The average speed is

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) ( AS_(7))

Joseph jogs from one end A to the other end B of a straight 300 m road in 2 minute 30 second and then turns around and jogs 100 m back to point in another 1 minute. What are Joseph's average speeds and velocities in jogging (a) from A to B and (b) from A to C?

Two trains start from the same place. A person travel in a train whose speed is 50 km/h and it go to south direction. Another person travel in another train whose speed is 60 km/h and it go to west direction. After two hours, find the rate of distance between them.

An insect starts from a point and travels in a straight path 1 mm in the first second and half of the distance covered in the previous second in the succeeding second. In how much time would it reach a point 3 mm away from its starting point.

A car moving in a straight line at a speed of 120 km covers in 2 hours. There after from that left side it covers 50 km in 1 hours. At that moment its average speed and aveerage velocity will ……. And ……

A body starts from rest and travels a distance x with uniform acceleration, then it travels a distance 2x with uniform speed, finally it travels a distance 3x with uniform retardation and comes to rest. If the complete motion of the particle is along a straight line, then the ratio of its average velocity to maximum velocity is

An express train takes 1 hour less than a passenger train to travel 132 km between Mysore and Bangaluru (without taking into consideration the time they stop at intermediate stations). If the average speed of the express train is 11km/h more than that of the passenger train, find the average speed of the two trains.