HELP!!!! FAST!!!! 20 POINTS!!!! You are a traffic accident investigator. You have arrived at the scene of an accident. Two trucks of equal
mass (3,000 kg each) were involved in a rear-end accident at a stop sign. Here is what you know:
• Truck 1 started from rest at the top of a 22-meter hill and coasted toward the intersection.
.
Truck 2 was on a flat stretch of road at the bottom of the hill directly in front of Truck 1.
At the bottom of the hill, Truck 1 was going 20 m/s; Truck 2 was going 35 m/s.
.
There were no skid marks left by Truck 2. The collision occurred at the stop sign where Truck 2 had
stopped
• After the collision, both trucks moved together in the same direction at 10 m/s before slowly rolling
to a stop.
You must now push Truck 2, using 1,000 N of force, 8 meters off to the side of the road so no one
else gets hurt.
1. How much work was done to bring truck 2 to a stop? 2. If tuck 2 came to a stop In 15 seconds, how much power (in watts) did it take to stop truck 2 at the sign by applying force to the brakes? 3. What is the final combined momentum of the trucks right after the accident? 4. Assuming that there are no other no conservation forces involved, what impulse was given to each truck during the collision? A. Truck 1: B. Truck 2:

Answer:

1) Kinetic energy of the truck 1 is 600,000 joules.

Kinetic energy of the truck 2 is 1,837,500 joules.

2 a)Potential energy of truck 1 is 646,800 Joules.

b) Energy lose by the truck 1 just got converted into heat and sound energy during the collision.

Step-by-step explanation:

Mass of the truck 1 and truck 2,m = 3000 kg

Velocity of the truck 1,  = = 20 m./s

Velocity of the truck 2, = 35 m./s

1. Kinetic energy of the truck 1:

Kinetic energy of the truck 2:

2.a) Energy loose by the truck 1:

Initial height of the truck on the hill = 22 m

At that height potential energy will be maximum:

Potential energy of truck 1 at that height =

b) Energy lost by the truck 1 just got converted into heat and sound energy during the collision.

Match each root with its meaning.

Match Term Definition
Port A) To build, form
Voc B) To pull
Tract C) To be empty
Vac D) To carry
Struct E) Voice; to call

PLEASE HELP!!! WIL GIVE BRAINLIEST
The following leaf, with edges that appear burnt, was observed on an impatiens plant.

Which mineral is this impatiens likely deficient in?
a. phosphorus
B calcium
C potassium
D sulphur

In general, how does biodiversity vary across the biosphere?

Help will mark brainliest #7,8

Why does the concentration of mercury in the tissues of organisms increase as it
moves through the tropic levels?

a) Animal cells absorb mercury better than algal cells do.

b) The mercury does not affect the smaller organisms.

c) The mercury in the small organisms is not activated until the larger organism
eats the mercury

d) The mercury in the cells of each organism that is eaten accumulates in the
larger animal's cells.

Which product forms from the reaction between nitrogen (N)
(CI)?
A. NCI
B. NCI
C. N2CI
O D. N2C1

Someone pls help me ill give out brainliest pls don’t answer if you don’t know

What are the 3 major parts of the circulatory system?

If all the cougars disappeared from this community, which change would be
most likely to occur?
coyote cougar
squirrel
mouse
deer
grass
acoms
mushrooms
A. The squirrel population would increase
B. The deer population would increase.
C. The grass population would increase.
D. The coyote population would decrease.

PLEASE HELP!! DUE IN A COUPLE DAYS

Anyone know this problem?

A student wants to perform an experiment to test the effect of different colored lights on the growth of basil plants. She sets up an experiment where multiple basil plants are placed in six different setups; one with red light, one with green light, one with yellow light, one with blue light, one with no light and one with sunlight. In each setup the plant receives the same amount of water, soil, and size of container. What is the independent variable in this experiment

p,ease help meeee
it's also due ​

Which molecules are used to form cell membranes?
A. polysaccharides
B. amino acids
C. fuphospholipids
D. fatty acids

6.If a planet is considered habitable, what would that mean?

We could form new habits there.

It would NOT be able to support life

It would have conditions necessary to support life

Only humans could live there

4. Assertion A: Prokaryotes are identified by the membrane bound cell organelles. Reason R: Prokaryotes are considered as the primitive forms of life. *
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.

Ella repeated Mendel's second set of experiments. She crossed two non-pure
tall pea plants and produced eight offspring. All of the offspring were tall. She
concluded that her experiment must be flawed.
What is wrong with Ella's reasoning?
A. Ella did not perform enough trials to evaluate the pattern in the
results.
O B. Ella did her experiment correctly. Mendel's experiments must have
been flawed.
C. Ella should have crossed two pure-breeding tall plants.
O
D. Ella did not accurately measure the height of the plants.

What are the products of cellular respiration?
A. Energy, carbon dioxide, and water
B. Oxygen, carbon dioxide, and water
C. NADPH and oxygen
D. Glucose and ATP

what type of white blood cell is activate memory cells ?

1. Unit of hereditary information
2. Trait that will appear on the offspring, represented by
capital letter
3. Trait that will not appear on the offspring, represented by
small letter
4. An Austrian monk who discovered that traits can be passed
from parents to offspring.
5. Genetic makeup of an individual.
6. Physical trait or observable trait of an individual,
7. Genotype composed of similar alleles. Ex. RR-round
8. Different forms or pairs of genes.
9. Genotype composed of dominant and recessive alleles. Ex
Rr
10. It occurs when both alleles are present in an organism.
Ex. BB (black chicken) x WW (white chicken) = BW = black
and white chicken,



Nonsense report, pls pa answer brainliest ko po agad

Explain how the
leguminious plants assist
the growth of the
young
rubber
trees.

Think about how diet and weight-loss companies advertise. How do they use bias to sell their products?

Climate zones result in specific vegetation types developing in a region. Which
climatic region is hot and wet all year round, resulting in tropical rainforest Vegetation?​

Select the correct answer
Which of the following forensic scientists identifies human remains by comparing dental patterns with existing dental records?
A forensic anthropologist
OB forensic odonatologist
OC forensic entomologist
D.
forensic toxicologist
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The genetic material appearing like a thread in the nucleus is known as _____. the spindle chromatin DNA

In the morning you eat an orange and drink a cup of coffee, both are acidic items.
What happens to the pH of the cells in your body?

Which of the following biological outcomes is not a result of mitosis? *
Maintenance of genetic composition
Introduction of genetic variation
Repair of skin wounds
Growth of organs

can the enzyme DNA polymerase be used to break down or build lactose?

Scott made a model of the water cycle by filling a tub with water, covering the tub with clear plastic, and placing a heat lamp over the tub. After a few days, he observed water droplets collecting on the plastic wrap. What process formed the water droplets in Scott's model?

50 points were put in, and brainliest will be awarded. In a real garden, which hormones would stimulate seed germination and plant growth? How do these feedback mechanisms maintain homeostasis in plants?