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3 years ago

First aid for a strain or a sprain

Physics

1 answer:

vazorg [7]3 years ago

7 0

Answer:

The correct answer is - C) the RICE formula.

Explanation:

The first aid for a patient with a sprain or strain mainly includes the RICE formula which stands for the rest, ice, compression, and elevation. In case of a sprain or strain, one is advised to rest, use ice on the location of the sprain, compression on the part of the sprain, and elevate the body part for less pain, less swelling or reducing chances of making it worst.

The other three formulas given are used in different conditions. The FITT formula used in the exercise planning, and the ABC formula used for the first aid of the heart attack or blockage of the airway.

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A large crate is suspended from the end of a vertical rope. Is the tension in the rope greater when the crate is at rest or when

choli [55]

Answer:

Part a)

the tension force is equal to the weight of the crate

Part b)

tension force is more than the weight of the crate while accelerating upwards

tension force is less than the weight of crate if it is accelerating downwards

Explanation:

Part a)

When large crate is suspended at rest or moving with uniform speed then it is given as

$F_t - mg = ma$

here since speed is constant or it is at rest

so we will have

$a = 0$

$F_t = mg$

so the tension force is equal to the weight of the crate

Part b)

Now let say the crate is accelerating upwards

now we can say

$F_t - mg = ma$

$F_t = mg + ma$

so tension force is more than the weight of the crate

Now if the crate is accelerating downwards

$F_t - mg = -ma$

$F_t = mg - ma$

so tension force is less than the weight of crate if it is accelerating downwards

4 0

3 years ago

How does an airbag help protect a passenger in a car accident?

Novosadov [1.4K]

Good question. It like a fail safe,if you hit a car tail gate going slightly fast it come out to protect you from hitting your on the the wheel or the mirror. See if you don't have a seat belt or it just don't fully stop you the airbag might help.Like concussions. I Hope This Help you :)

8 0

3 years ago

Read 2 more answers

If a car travels 216 kilometers in 4 hours, calculate its speed.

Mariana [72]

Answer:

15 m/s

Explanation:

Speed(m/s) = distance(m)/time(s)

distance = 216 km = 216,000 m

time = 4 hours = 14,400 s

speed = 216000/14400 = 15 m/s