Question

A 0.050 kg air track glider moving at 5.2 m/s hits a stationary 0.150 kg air track glider. Velcro makes them stick together after impact. What is the common speed of the gliders?

Answer 1

Answer:

1.3 m/sec

Explanation:

Mass of the first glider that is $m_1=0.050\ kg$

Velocity before hitting the second glider that is $v_1$ = $5.2m/sec$

Mass of the second glider is that is $m_2=0.150\ kg$

After hitting the combined mass $=m_1+m_2=0.050+0.150=0.200\ kg$

We know that momentum is always conserved

So $m_1v_1=(m_1+m_2)v_2$

$0.050\times 5.2=0.2\times v_2$

$v_2=1.3 m/sec$