Home
Class 9
PHYSICS
What is the speed of the body moving wit...

What is the speed of the body moving with uniform acceleration at the midpoint of two points on a straight line, where the speeds are u and v respectively?

Text Solution

Verified by Experts

Let .a. be the constant acceleration and s be the distance between the two points, From equation of motion
`v^(2) - u^(2) = `2as ............ (1)
Let `v_(0)` be the speed of the body at midpoint ‘M’ of the given points. Applying the same equation used above, we get
`v_(0)^(2) - u^(20 = 2a (s)/(2)`
From (1) , we get
`v_(0)^(2) - u^(2) = (v^(2) - u^(2))/(2)`
`v_(0)^(2) = (v^(2) - u^(2))/(2) + u^(2)`
`v_(0)^(2) = (v^(2) - u^(2) + 2u^(2))/(2)`
` v_(0) = sqrt((v^(2) + u^(2))/(2))`
Promotional Banner

Topper's Solved these Questions

  • MOTION

    NCERT GUJARATI|Exercise LET US IMPROVE OUR LEARNING (REFLECTIONS ON CONCEPTS )|7 Videos
  • MOTION

    NCERT GUJARATI|Exercise LET US IMPROVE OUR LEARNING(APPLICATION OF CONCEPTS)|7 Videos
  • LAW OF MOTION

    NCERT GUJARATI|Exercise LET US IMPROVE OUR LEARNING (MULTIPLE CHOICE QUESTIONS )|5 Videos
  • REFRACTION OF LIGHT AT PLANE SURFACES

    NCERT GUJARATI|Exercise THINK AND DISCUSS|2 Videos

Similar Questions

Explore conceptually related problems

For body moving with uniform acceleration a change in velocity of body in Deltat time interval will be …... .

What will be the work done on the body moving with constant speed ?

A train is moving with constant acceleration. When the ends of a train pass by a signal their speeds are u and v respectively. Calculate the speed of the midpoint of the train while passing the signal.

A train is moving with constant acceleration. When the ends of the train pass by a signal their speeds are 30 km/h and 40 km/h respectively. Calculate the speed of the midpoint of train while passing the signal.

What will be change in speed of moving object if both speed and acceleration are positive or negative?

Give velocity and acceleration at any point for an moving object whose x to t graph is straight line.

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