The formula for kinetic energy is KE = (1/2) (mass) (speed²)
== The 50 kg ball traveling at 10 m/s has <em>some</em> kinetic energy.
== A 50 kg ball traveling at 20 m/s would be moving at double the speed. So it would have (2)² = <em>4 times as much</em> kinetic energy.
== A 50 kg ball traveling at 5 m/s would be moving at 1/2 the speed. So it would have (1/2)² = <em>1/4 as much</em> kinetic energy.
== A 50 kg <u>person</u> falling at 10 m/s would have <em>exactly the same</em> amount of kinetic energy as the 50 kg <u>ball</u> traveling at 10 m/s.
4). Frequency
I had a class on it.
Answer:
By elimination I know it's not CGL and I know it's not Charle's Law.
Gay-Lussac's law states the pressure of a a given mass of gas varies directly with the absolute temperature of the gas, when the volume is kept constant. I think it's Gay-Lussac's Law.
Boyle's law states that pressure of a gas tends to increase as the volume of the container decreases which I got from a google search because I didn't know what it was.
CGL is the combined formula of all of these laws by the way
Charle's law is just gas expands when heated.
Gay-Lussac's is the best answer choice in my opinion
Answer:
5 m/s
Explanation:
Work is force times distance.
W = Fd
Force is mass times acceleration.
W = ma d
Acceleration is change in velocity over change in time.
W = m Δv / Δt d
Distance over time is average velocity.
W = m Δv v_avg
W = m (v − v₀) (v + v₀) / 2
W = m (v² − v₀²) / 2
Plugging in values:
50 J = 4 kg (v² − (0 m/s)²) / 2
25 m²/s² = v²
v = 5 m/s
Answer:
The total angular momentum is 292.59 kg.m/s
Explanation:
Given that :
Rotation of the horizontal circular platform 
= 0.919 rad/s
mass of the platform (m) = 90.7 kg
radius (R) = 1.91 m
mass of the poodle 
= 20.5 kg
Your mass 
= 73.5 kg
speed v = 1.05 m/s with respect to the platform
r = 0.955
Mass of the mutt 
= 18.5 kg
Your angular momentum is calculated as:
Your angular velocity relative to the platform is 
For poodle :
Actual 
Disk 
Total angular momentum of system is:
L = 
= (152.04 + 98.76 + 6.9003 + 34.89) kg.m/s
= 292.59 kg.m/s
