Explanation: For collisions, use linear momentum, whose formula is: P = m.v and knowing the law of conservation states that momentum of a closed system is constant in time, i.e. initial momentum equals final momentum:

$p_{f} = p_{i}$

$m_{A}v_{f_A} + m_{B}v_{f_B} = m_{A}v_{i_A} + m_{B}v_{i_B}$

Suppose the referential for velocity is positive to the right:

$1.v_{f_A} + 2.(-3.5) = 1.(+2) + 2.(-7)$

$1.v_{f_A} = 7 + 2 - 14$

$v_{f_A} = - 5$

The negative sign, in this case, indicates cart A is going to the left.

The magnitude of velocity of cart A is 5 m/s

4 0

3 years ago

In the Hunger Games chapter 6 How does Katniss feel about Effie's description of the "barbarism of your district?"

sladkih [1.3K]

may the odds be ever in your favor

3 0

3 years ago

Which of the following is not a conflict in "The Use of Force"?

adoni [48]

Answer:

<em>D.) The Girl Physically attacks her father to avoid the exam</em>

Explanation:

8 0

3 years ago

What happens to odysseus and his men when they reach the island of laestrygonians.

Tom [10]

Answer:

Odysseus sends some of his men to explore the island and they run into to not-so-humble Laestrygonians who are cannibals and eat his exploring men.

Explanation:

3 0

2 years ago