Answer:
is the final velocity of the racket.
Explanation:
Given:
- mass of the racket,
- mass of ball,
- initial speed of racket,
- initial speed of ball,
- final speed of ball,
- time of contact of racket with the ball,
<u>By the law of conservation of momentum:</u>
where: final velocity of the racket
is the final velocity of the racket.
<u>By the Newton's second law of motion:</u>
............................(1)
where:
dp = change in momentum
dt = change in time
Change in momentum of ball:
Now, using eq.(1):
Answer:
a = ½ ρ A/M v₁²
Explanation:
This is a problem of fluid mechanics, where the jet of water at constant speed collides with a paddle, in this collision the water remains at rest, we write the Bernoulli equation, we will use index 1 for the jet before the collision the index c2 for after the crash
P₁ + ½ ρ v₁² + ρ g h₁ = P₂ + ½ ρ v₂² + ρ g h₂
in this case the water remains at rest after the shock, so v₂ = 0, as well as it goes horizontally h₁ = h₂
P₁-P₂ = ½ ρ v₁²
ΔP = ½ ρ v₁²
let's use the definition of pressure as a force on the area
F / A = ½ ρ v₁²
F = 1/2 ρ A v₁²
the density is
ρ = m / V
the volume is
V = A l
F = ½ m / l v₁²
knowing the force we can focus on the acceleration of the mass palette M
F = M a
a = F / M
a = ½ m/M 1/l v₁²
as well it can be given depending on the density of the water
a = ½ ρ A/M v₁²
Answer:
Your answer will be 600meters
Answer:
The Spring force
Explanation:
The Spring force is a force that is centered around, guess what, springs. Al that the Spring force says is that when a spring is compressed or stretched out, it will return to the state that it was originally in, and because it is retracting it falls under the Spring force.