Potencial Energy =hma
Where
h=1.9m
m=2.3kg
g=9.8m/s^2
E=(1.9m*2.3kg*9.8m/s^2)
E=42.826 kgm^2/s^2
E=42.826 J
Answer:
Ionic Compound
Explanation:
To identify the type of chemical bond in a molecule, look at the atoms that make up the compound. If there are two nonmetals, it is a covalent bond. If the two atoms are metals, it is a metallic bond. If one atom is a metal and the other is a nonmetal, it is an ionic bond. Ionic compounds are also known as salts. You can identify KBr as an ionic compound because potassium is a metal and a salt.
Hope this helps
Answer:15th
Explanation:
I believe it will fall on the 15th stair because 10 times 15 is 150 divided by 10 m/s equals 15
The speed of the vehicle after the push is 2.7 m/s.
<h3>What is velocity?</h3>
velocity is the rate of change of displacement.
To calculate the velocity of the vehicle, we use the formula below.
Formula:
- v = √[2(W-W')/m]............... Equation 1
Where:
- W = work done by the pusher
- W' = Work done by friction
- m = mass of the car
From the question,
Given:
- W = 6500 J
- W' = 2000 J
- m = 1200 kg
Substitute these values into equation 1
- v = √[2(6500-2000)/1200]
- v = √(7.5)
- v = 2.7 m/s
Hence, the speed of the vehicle after the push is 2.7 m/s.
Learn more about velocity here:
#SPJ1
Answer:
Approximately 8 seconds (which seems to be Answer B although there is a typo)
Explanation:
Use the formula that defines acceleration of an object as the difference between its final velocity and its initial velocity divided by the time it took to go from one to the other:
We use this expression and the values given to solve for the unknown "t" (time):
Given the units of the physical quantities, the answer for t is in seconds. We round it to about 8 seconds.