3 years ago

Why is the geologic record important to scientists

1 answer:

7 0

The geologic record is the history of Earth as recorded in the rocks that make up its crust. Rocks have been forming and wearing away since Earth first started to form, creating sediment that accumulates in layers of rock called strata. The way these strata are arranged and what fossils are in them give scientists clues about what Earth was like billions of years ago.

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One Newton is equivalent to<br> A. 1 kg/s2<br> B. 1 kg*m/s<br> C. 1 kg*m/s2<br> D. 1 kg/s

tiny-mole [99]

Answer:

Explanation:

7 0

2 years ago

A 100 g wire is held under a tension of 250 n with one

sashaice [31]

So??
what is the question??

6 0

3 years ago

Please someone help me.

katovenus [111]

Answer:

acceleration of the car is 3 m\s^2

Explanation:

from rest means the initial velocity (vi) is zero

time = 5s

final velocity (vf) = 15m\s

a = vf - vi \ t

a = (15-0) \ 5

a= 3 m\s^2

which means that the car is speeding up 3 meters every second

5 0

3 years ago

two soccer players run toward each other. one player has a mass of 85 kg and runs west with a speed of 8 m/s, while the other ha

marissa [1.9K]

Answer:

Total momentum, p = 55 kg-m/s

Explanation:

It is given that,

Mass of player 1, m₁ = 85 kg

Mass of player 2, m₂ = 105 kg

Speed of player 1, v₁ = -8 m/s (west)

Speed of player 2, v₂ = 7 m/s (east)

Momentum is equal to the product of mass and velocity. For this system, momentum is given by :

$p=m_1v_1+m_2v_2$

$p=85\ kg\times (-8\ m/s)+105\ kg\times 7\ m/s$

p = 55 kg-m/s

The total momentum of the system made up of the two players is 55 kg-m/s.

8 0

3 years ago

Read 2 more answers

What causes the change in momentum?

gizmo_the_mogwai [7]

Answer:

See explanation

Explanation:

A change in momentum occurs when a force is applied to an object and changes its velocity.

3 0

3 years ago