Q5 of 89 Page 49

A person travelling on a straight line moves with a uniform velocity v for a distance x and with a uniform velocity 2 for the next equal distance. The average velocity is given by

A.


B.


C.


D.


Let the distance be x for both uniform velocities v1 and v2. Since, the velocities are uniform, the acceleration is zero. Let the time taken be t1 and t2 corresponding to uniform velocities v1 and v2 respectively and thus






More from this chapter

All 89 →
3

A particle has a velocity u towards east at
t = 0. Its acceleration is towards west and is constant. Let xA and xB be the magnitude of displacements in the first 10 seconds and the next 10 seconds

 4

A person travelling on a straight line moves with a uniform velocity u1 for some time and with uniform velocity u2 for the next equal time. The average velocity u is given by

 6

A stone is released from an elevator going up with an acceleration a. The acceleration of the stone after the release is

 7

A person standing near the edge of the top of a building throws two balls A and B. The ball A is thrown vertically upward and B is thrown vertically downward with the same speed. The ball A hits the ground with a speed and the ball B hits the ground with a speed We have