SATHEE: Work Energy And Power Question 85

Work Energy And Power Question 85

Question: A heavy steel ball of mass greater than 1 kg moving with a speed of 2 $m \sec^{- 1}$ collides head on with a stationary ping-pong ball of mass less than 0.1 gm. The collision is elastic. After the collision the ping-pong ball moves approximately with speed [EAMCET 1982]

Options:

A) $2 m \sec^{- 1}$

B) $4 m \sec^{- 1}$

C) $2 \times 10^{4} m \sec^{- 1}$

D) $2 \times 10^{3} m \sec^{- 1}$

Show Answer

Answer:

Correct Answer: B

Solution:

We know that when heavier body strikes elastically with a lighter body then after collision lighter body will move with double velocity that of heavier body. i.e.the ping pong ball move with speed of $2 \times 2 = 4 m / s$

Work Energy And Power Question 85

Question: A heavy steel ball of mass greater than 1 kg moving with a speed of 2 $m \sec^{- 1}$ collides head on with a stationary ping-pong ball of mass less than 0.1 gm. The collision is elastic. After the collision the ping-pong ball moves approximately with speed [EAMCET 1982]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Work Energy And Power Question 85

Question: A heavy steel ball of mass greater than 1 kg moving with a speed of 2 msec−1 collides head on with a stationary ping-pong ball of mass less than 0.1 gm. The collision is elastic. After the collision the ping-pong ball moves approximately with speed [EAMCET 1982]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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Question: A heavy steel ball of mass greater than 1 kg moving with a speed of 2 $m \sec^{- 1}$ collides head on with a stationary ping-pong ball of mass less than 0.1 gm. The collision is elastic. After the collision the ping-pong ball moves approximately with speed [EAMCET 1982]