Answer:
A. It is the work done when a force of 1 newton is applied to an object for a distance of 1 meter
Explanation:
Answer: The momentum of the child and milk together is 58.125 kg.m/s
Explanation:
Momentum is defined as the product of object's mass and velocity.
Mathematically,
![p=mv](https://tex.z-dn.net/?f=p%3Dmv)
where, p = momentum
m = mass of the object
v = velocity of the object
In the given question, we are given that a child of mass 21.0 kg is carrying a gallon of milk having mass 2.25 kg and running with a velocity of 2.5 m/s. Hence, the momentum by both milk and child will be:
....(1)
Given:
![m_{child}=21.0kg\\m_{milk}=2.25kg\\v=2.5m/s\\p=?kg.m/s](https://tex.z-dn.net/?f=m_%7Bchild%7D%3D21.0kg%5C%5Cm_%7Bmilk%7D%3D2.25kg%5C%5Cv%3D2.5m%2Fs%5C%5Cp%3D%3Fkg.m%2Fs)
Putting values in equation 1, we get:
![p=(21+2.25)kg\times 2.5m/s=58.125kg.m/s](https://tex.z-dn.net/?f=p%3D%2821%2B2.25%29kg%5Ctimes%202.5m%2Fs%3D58.125kg.m%2Fs)
Hence, the momentum of the child and milk together is 58.125 kg.m/s
Allotropes are elements on the periodic table that have more than one crystalline form . There are three forms of the element carbon : Diamond, Graphite, and Fullerenes. Isotopes are atoms of the same element with the same atomic number but have a different mass number.
Answer:
<h2>
0.50 m/s</h2><h2>
</h2>
Explanation:
Velocity = distance over time
where distance = 5.20 m
time = 10.4 s.
velocity = <u> 5.20 m </u>
10.4 s.
= 0.50 m/s