3 years ago

What is the speed vf of the package when it hits the ground?

Physics

1 answer:

frez [133]3 years ago

6 0

<span>The answer is in m/s</span>

You might be interested in

When a force of 15 newtons is applied to a stationary chair, it starts moving. What can you say about the frictional force betwe

Darina [25.2K]

Answer:

D) the force of static friction between the chair and the floor is less than 15 newtons

4 0

3 years ago

When an object absorbs light energy, it reflects

mestny [16]

I’m pretty sure it’s C

8 0

3 years ago

lood flows through a section of a horizontal artery that is partially blocked by a deposit along the artery wall. As a hemoglobi

uysha [10]

Answer:

$P_1 - P_2 =219.62\ Pa$

Explanation:

given,

density of blood = 1060 kg/m³

v₂ = 0.800 m/s

v₁ = 0.475 m/s

change in pressure calculation

using Bernoulli's equation

$P_1 +\dfrac{1}{2}\rho v_1^2 = P_2 + \dfrac{1}{2}\rho v_2^2$

both are at same level

$P_1 - P_2 =\dfrac{1}{2}\rho (v_2^2- v_1^2)$

$P_1 - P_2 =\dfrac{1}{2}1060\times (0.8^2- 0.475^2)$

$P_1 - P_2 =219.62\ Pa$

the change in pressure is equal to 219.62 Pa

5 0

3 years ago

What are some common positive and negative attitudes toward physical activities? What

ra1l [238]

the common attributes are positive and negatively charged

4 0

2 years ago

A 1,600 kg train car rolling freely on level track at 16 m/s bumps into a 1.0 × 103 kg train car moving at 10.0 m/s in the same

emmainna [20.7K]

This item is solved through the concept of the conservation of momentum which states that the momentum before and after collision should be equal.
momentum = mass x velocity
(1,600 kg)(16 m/s) + (1.0x10^3 kg)(10 m/s) = (1600 + 1000 kg)(x)
The value of x is 13.69 m/s. Thus, their final speed is approximately letter D. 14 m/s.

6 0

3 years ago