Answer:
D.Oval
Explanation:
because it is not completely circular
A 100 g cart is moving at 0.5 m/s that collides elastically from a stationary 180 g cart. Final velocity is calculated to be 0.25m/s.
Collision in which there is no net loss in kinetic energy in the system as a result of the collision is known as elastic collision . Momentum and kinetic energy both are conserved quantities in elastic collisions.
Collision in which part of the kinetic energy is changed to some other form of energy is inelastic collision.
For an elastic collision, we use the formula,
m₁V₁i+ m₂V₂i = m₁V1f + m₂V₂f
For a perfectly elastic collision, the final velocity of the 100g cart will each be 1/2 the velocity of the initial velocity of the moving cart.
Final velocity = 0.5/2
=0.25 m/s.
To know more about elastic collision, refer
brainly.com/question/7694106
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The Martian acceleration of gravity (as measured by this jury-rigged device) is
(0.4 cm/1.08 cm) x (9.81 m/s²)
That's <em>3.63 m/s²</em> .
Google says 3.711 m/s², so I guess that's not too bad.
Only about 2% wrong.
Answer:
T = 365246.01 N (↑)
Explanation:
We must show the image, in order to explain the solution.
Then, we apply
∑ Fy = 0 (+↑)
Ff - W - T = 0 ⇒ T = Ff - W
We can get the the buoyant force (Ff) as follows:
Ff = ρ*g*V
where V is obtained using the equation
V = (1/3)*π*r²*h
we get r as follows
(20 cm / 30 cm) = (r / 20 cm) ⇒ r = 13.33 cm = 0.133 m
h = 20 cm = 0.20 m
then
V = (1/3)*π*r²*h = V = (1/3)*π*(0.133 m)²*(0.20 m) = 37.23 m³
then we get the buoyant force (Ff)
Ff = ρ*g*V = (1000 Kg/m³)*(9.81 m/s²)*(37.23 m³) = 365262.51 N
Finally, we use the equation
T = Ff - W = 365262.51 N - 16.5 N = 365246.01 N (↑)
