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kolezko [41]
3 years ago
14

Using information about natural laws, explain why some car crashes produce minor injuries and others produce catastrophic injuri

es.
Physics
2 answers:
Ludmilka [50]3 years ago
3 0
It all has to do with what's going on around us. The speed of the vehicles, the type of vehicle, the safety factors, seatbelts, where you are in the car, what was the force of the impact, etc; Every accident has different factors playing into them in order to lead to said injuries 
WITCHER [35]3 years ago
3 0
Angle of attack ,velocity ,seatbelt health, airbags, cumbustion of the car ,car type, saftey features ,location of  collision aka being hit in the drivers side door is worse then being hit in the trunk
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A book sits on a bookshelf without moving until a student picks it up. Which law best explains why the book remains at rest unti
svetoff [14.1K]

Answer:

Newtons first law

Explanation:

object in rest stays at rest

object in motion stays in motion

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3 years ago
2. A hydraulic lift is used to lift heavy machine pushing down on a 5 square meters piston with a force of 1000 N. What force ne
IRINA_888 [86]

Answer:

The force needs to be applied on the 1 square meter piston to lift the machine is 200 N.

Explanation:

Given that,

Force, F_1=1000\ N

Area, A_1=5\ m^2

We need to find the force needs to be applied on the 1 square meter piston to lift the machine. We know that the pressure at every point is same due to Pascal's law such that :

P_1=P_2\\\\\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2}\\\\\dfrac{1000}{5}=\dfrac{F_2}{1}\\\\F_2=200\ N

So, the force needs to be applied on the 1 square meter piston to lift the machine is 200 N. Hence, this is the required solution.

3 0
4 years ago
Read 2 more answers
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Anit [1.1K]

1) c. 2 m/s

Explanation:

The relationship between frequency, wavelength and speed of a wave is

v=\lambda f

where

v is the speed

\lambda is the wavelength

f is the frequency

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v=(0.5 m)(4 Hz)=2 m/s

2)  a. 2.8 m/s

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In this problem, we have:

T=2 \cdot 4 N=8 N (final tension in the rope, which is twice the initial tension)

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3 years ago
Which sentence uses the correct adverb to make a comparison?
Arturiano [62]
Option C would be the right one
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A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east. The child is 0.
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In a problem where a child is danger form drowning from a river who has a current of 3.1km/hr to east and the child is 0.6km fro the shore and the upstream is 2,5km from the dock. So base on the question the boat with a speed of 24.8 km/hr is 1.9 km because the child is 0.6 km off the dock so 2.5 minus 0.6
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