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Question

What is the value of $$p_1$$ and $$m_2$$ ?
m (kg)v (m/s)p = mv (kgm/s)
8560$$p_1$$
$$m_2$$2.56.25


A
5100, 2.5
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B
5.1 , 2.5
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C
2500, 5
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D
55, 2.6
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Solution

The correct option is A 5100, 2.5
m (kg)v (m/s)p = mv (kgm/s)
85605100
2.5
2.56.25
In first case:
$$ m=85kg $$
$$v =60 m/s$$
$$ p =mv = 85 \times 60 = 5100\ kg m/s$$
In second  case:
$$ m=? $$
$$v =2.5 m/s$$
$$ p =mv = 6.25 $$
$$\therefore m = \dfrac{p}{v} = \dfrac{6.25}{2.5} = 2.5\ kg$$

Mathematics

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