Suppose the initial kinetic energy and final potential energy in an experiment are both zero. What can you conclude?

Physics

2 answers:

faltersainse [42]3 years ago

4 0

At the beginning it is not moving and at the end it is on the ground or the bottom of a hill.

puteri [66]3 years ago

3 0

Answer:

That an item is neither moving nor staying still in a position that is building up energy.

Explanation:

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In midair an M = 145 kg bomb explodes into two pieces of m1 = 115 kg and another, respectively. Before the explosion, the bomb w

Daniel [21]

Answer:

$v_2=-133.17m/s$ , the minus meaning west.

Explanation:

We know that linear momentum must be conserved, so it will be the same before ( $p_i$ ) and after ( $p_f$ ) the explosion. We will take the east direction as positive.

Before the explosion we have $p_i=m_iv_i=Mv_i$ .

After the explosion we have pieces 1 and 2, so $p_f=m_1v_1+m_2v_2$ .

These equations must be vectorial but since we look at the instants before and after the explosions and the bomb fragments in only 2 pieces the problem can be simplified in one dimension with direction east-west.

Since we know momentum must be conserved we have:

$Mv_i=m_1v_1+m_2v_2$