Answer:
140m
70sec I cant show my work but I gave you a push
Explanation:
Brainliest?
<h2>
Answer:The total momentum before collision is equal to the total momentum after collision.</h2>
Explanation:
Conservation of momentum states that whenever no external force is acting on a system,the total momentum is constant.
When we consider collisions,take the system as the two bodies that are colliding.
There are no external forces acting on the system.The forces that one body exerts on other come under internal forces.
So,momentum can be conserved in this case.
So,the total momentum before collision is equal to the total momentum after collision.
Answer: B,E,F
Explanation:
(B) the inner core is solid. (E) the outer core is liquid and moving. (F) Earth's core is composed of iron and nickel
Answer:
Mass, m = 16.02kg
Explanation:
Given the following data;
Force, F = 157N
Since it's a free fall, acceleration, a = g = 9.8m/s² (acceleration due to gravity).
To find the mass;
Force is given by the multiplication of mass and acceleration.
Mathematically, Force is;
Where;
- F represents force measured in Newton.
- m represents the mass of an object measured in kilograms.
- a represents acceleration measured in meter per seconds square.
<em>Making mass (m) the subject of formula, we have;</em>
<em>Substituting into the equation;</em>

Mass, m = 16.02kg
<em>Therefore, the mass of the rock is 16.02kg.</em>