Anna drives north at a speed of 50 km/h for the first hour. then, she drives north for a second hour but slows down to 30 km/h. compare or contrast the first hour of her trip to the second hour of her trip.

group of answer choices

the distance is greater in the first hour because her speed is faster.

the distance is greater in the second hour because her speed is slower.

the displacement is the same for both hours because she is travelling north the entire time.

the distances are the same for both hours because she is travelling north the entire time.

The correct answer is A The distance is greater in the first hour because her speed is faster.

Explanation:

During the first hour, Anna is driving at a speed of 50 km/h. During the second hour, she is only driving at a speed of 30 km/h. The faster she goes, the farther she will go.

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The distance is greater in the first hour because her speed is faster.

Explanation:

As we know that the distance of an object is given as

here we know that in first hour speed is

Towards North

So the distance moved by the car is

Now similarly we have speed in next hour as

Towards North

so distance will be

So correct answer will be

The distance is greater in the first hour because her speed is faster.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day