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solniwko [45]
3 years ago
9

At 9:13 A.M., a sports car is traveling 34 miles per hour. Two minutes later, the car is traveling 84 miles per hour. The mean v

alue theorem guarantees that at some time during this two-minute interval, the car's acceleration is exactly A miles per hour squared. Compute the value of A
Physics
1 answer:
WITCHER [35]3 years ago
7 0

Answer:

Acceleration will be 25miles/hour^2                    

Explanation:

We have given that car is traveling with speed 34 miles per hour

So initial speed of the car u = 34 miles per hour

After 2 hour speed will be 84 miles per hour

So final speed V = 84 miles per hour

Time = 2 hour

From first equation of motion we know that v=u+at

So acceleration a=\frac{v-u}{t}=\frac{84-34}{2}=25miles/hour^2

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AnnyKZ [126]

L=F•d=>d=L/F=40,000/20=2,000 m

7 0
3 years ago
Vector A has magnitude of 15.0 m/s and is 75° counter-clockwise up from the x-axis. What are the x- and y-components of the vect
LiRa [457]

Answer:

x component 3.88 y- component 14.488

Explanation:

We have given a vector A which has a magnitude of 15 m/sec which is at 75° counter-clock wise ( anti-clock wise) from x -axis which is clearly shown in bellow figure

Now x-component will be 15 cos75°=3.8822 ( as it makes an angle of 75° with x-axis )

y- component will be 15 sin 75°=14.488

For verification the resultant of x and y component should be equal to 15

So resultant =\sqrt{14.488^2+3.88^2}=15

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3 years ago
many lichens are composed of fungi and algae. The fungi get sugars from the algae, and the algae get water, minerals, and protei
Tcecarenko [31]

Answer:

The answer is mutualism because they are both on the receiving and giving ends

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3 years ago
What is the empirical formula of metaldehyde, C8H16O4?
inessss [21]

Answer:

C8H16O4

Explanation:

ok??

7 0
2 years ago
4. A 1,000 kg truck moving at 10 m/s runs into a concrete wall. It takes 0.5 seconds for the truck to conipietery
Maru [420]

Answer:

\large \boxed{\text{h. 20 000 N}}  

Explanation:

Force is the change in momentum over time

F = Δp/Δt

1. Calculate the change in momentum

p₁ = mv₁ = 1000 kg × 10 m/s = 10 000 kg·m·s⁻¹

p₂ = 0

Δp = p₂ - p₁= (0 - 10 000) kg·m·s⁻¹ = -10 000 kg·m·s⁻¹

2. Calculate the force

\begin{array}{rcl}F & = & \dfrac{\Delta p}{\Delta t}\\\\& = & \dfrac{-10 000 \text{ kg$\cdot$m$\cdot$ s}^{-1}}{\text{ 0.5 s}}\\\\& = & \textbf{-20 000 N}\\\end{array}\\\text{The negative sign shows that the force is exerted opposite to the direction of motion.}\\\text{The magnitude of the force is $\large \boxed{\textbf{20 000 N}}$}

3 0
3 years ago
Read 2 more answers
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