## Related questions with answers

If In an elastic collision, a $1.0 \mathrm{~kg}$ ball moving at $1.0 \mathrm{~m} / \mathrm{s}$ collides with a $2.0 \mathrm{~kg}$ ball moving at $-2.0 \mathrm{~m} / \mathrm{s}$. The $2.0 \mathrm{~kg}$ ball transfers all of its momenta to the $1.0 \mathrm{~kg}$ ball.

a. What velocity does the $1.0 \mathrm{~kg}$ ball have after the collision?

b. What is the initial kinetic energy of the system?

c. What is the final kinetic energy of the system?

Solution

Verifieda)In the first part of this task we have to calculate velocity of the ball after the impact if known information are:

$\begin{aligned} &m_1=1 \text{ kg}\\ &v_{01}=1 \text{ m/s}\\ &m_2=2 \text{ kg}\\ &v_{02}=-2 \text{ m/s}\\ \end{aligned}$

where subscription 1 is related to the first ball and subscription 2 is related to the second ball(2 kg).

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