The height is proportional to the kinetic energy of the
projectile. So the ratio of the two KEs is 5.4/2.2 = 2.45.
KE is proportional to velocity squared, so velocity is proportional to the
square root of the KE, which is √2.45 = 1.57, which is the answer.
To explain it more in detailed:
KE = PE = mgh, which displays you the KE and height proportionality.
KE = ½mV² or
V = √(2KE/m) which shows you the other proportionality
combining
V = √(2mgh/m) = √(2gh)
V₁/V₂ = √(2gh₁) / √(2gh₂) = √(h₁/h₂) = √(5.4/2.2) = 1.57
Answer: The sound is absorbed into the material on the walls
Explanation:
Distance equation is: distance = speed * time
t = time to the appointment
(t+0.25) = time back from the appointment (0.25 = 1/4)
50t = 40(t+0.25)
50t = 40t + 10
50t - 40t = 10
10t = 10
t = 1 hour
So, it took her one hour to get to the appointment, which means that the distance will be 50 miles, since she traveled 50 mph, which is 50 miles, since the time is one hour.
Answer:
B) trenches
Explanation:
New oceanic crust is formed and pushes the old oceanic crust down into a trench.
The decreasing order of the momenta are b>a=d=e>c.
<h3>
What is Momentum?</h3>
- Momentum is the result of a particle's mass and velocity. Being a vector quantity, momentum possesses both magnitude and direction.
- According to Isaac Newton's second equation of motion, the force acting on the particle equals the time rate of change of momentum.
- According to Newton's second law, if a particle is subjected to a constant force for a specific amount of time, the result of the force and time (referred to as the impulse) is equal to the change in momentum. On the other hand, a particle's momentum represents the length of time needed for a consistent force to bring it to rest.
Solution: The momentum of all the options are mentioned below according to the formula:
a. p = 20 × 1 = 20gm/s
b. p = 20 × 2 = 40gm/s
c. p =10 × 1 = 10gm/s
d. p = 10 × 2 = 20 gm/s
e. p =200 × 0.1 = 20gm/s
Know more about momentum brainly.com/question/904448
#SPJ4
Question:
I hope you are trying to ask the question below:
Rank in order, from largest to smallest, the momenta a to e of the objects
a. 20 g & 1 m/s
b. 20 g & 2 m/s
c. 10 g & 1 m/s
d. 10 g & 2 m/s
e. 200 g & 0.1 m/s
