Question

A shell of mass 20 kg at rest explodes into two fragments whose masses are in the ratio 2:3. The smaller fragment moves with a velocity of 6 ms −1 . The kinetic energy of the larger fragment is​

Answer 1

The masses of smaller and larger pieces be 8kg,12kg respectively.

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms −1

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms −1

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms −1 Here minus sign indicates that it is in opposite direction.

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms −1 Here minus sign indicates that it is in opposite direction.Kinetic energy of larger fragment =

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms −1 Here minus sign indicates that it is in opposite direction.Kinetic energy of larger fragment = 2

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms −1 Here minus sign indicates that it is in opposite direction.Kinetic energy of larger fragment = 21

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms −1 Here minus sign indicates that it is in opposite direction.Kinetic energy of larger fragment = 21

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms −1 Here minus sign indicates that it is in opposite direction.Kinetic energy of larger fragment = 21 mv

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms −1 Here minus sign indicates that it is in opposite direction.Kinetic energy of larger fragment = 21 mv 2

The masses of smaller and larger pieces be 8kg,12kg respectively.By conservation of momentum0=8×6+12×v⇒V=−4ms −1 Here minus sign indicates that it is in opposite direction.Kinetic energy of larger fragment = 21 mv 2 =96J

Answer 2

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