Question

A shell of mass 40kg moving with a velocity of 80m/s explodes and bursts into two fragments of masses 32kg and 8kg . If the latter comes to rest , velocity of the former is

Answer 1

Answer:

100m/s

Explanation:

mu= m2v+m2v

3200 = 32v +8 * 0

v = 100m/s

Answer 2

Answer:

Concept:

The directional speed of an item in motion is a measure of its rate of change in position as seen from a specific point of view and measured by a specific time standard. In kinematics, the branch of physical laws that explains the motion of bodies, velocity is a fundamental notion. Velocity is a physical dimensionless number that must be defined in terms of both magnitude and direction. The scalar absolute amount (magnitude) of velocity is speed, which is a coherence derived unit defined in m/s (m/s or ms1) in the SI (metric system). A vector is "5 metres per second east," but a scalar is "5 metres per second west."

Given:

A 40kg shell travelling at 80m/s explodes and splits into two fragments, each weighing 32kg and 8kg. If the latter comes to a halt, the former's velocity is

Given:

find the answer for the given question

Answer:

=> Velocity refers to an object's speed in a specified direction. Velocity is frequently defined mathematically as the change in location over time. Many basic physics problems use this core principle. Which formula you apply is determined by your knowledge of the object, so read the instructions carefully to ensure you've chosen the correct one.

$mv=m1v1+m2v2$

​      $=40*80$

     $=32*v+8*0$

$v=40*80/32$

  $= 100 m/s$

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