Question

Two balls of different masses are thrown
vertically upward with same initial speed.
Which one rise to a greater height?​

Answer 1

Answer:

Two balls of different masses are thrown

vertically upward with same initial speed.

Which one rise to a greater height?

Maximum height attained H=

g

u

2

which is independent of mass of ball.

where u is the velocity by which the ball is thrown vertically upward.

Using equation of motion for downward direction, v

2

−0=2gH

v

2

=2g

2g

u

2

⟹v=u (downward)

Velocity of the object thrown vertically upward is equal (but in opposite direction) at the two points which lie on same horizontal level.

Thus the two balls which are thrown upward with the same speed will have same speed at the point which passes through the point of projection in downward direction.

Hence the Assertion and the Reason are correct and the reason is the correct explanation for Assertion.

Answer 2

Answer:

i.e. height attained by the body is independent of the mass and depends on the initial speed of the bodies and value of g. So, if you throw two bodies vertically with the same initial speed, they will reach the same height. Answer: Both of them will achieve the same height.