PHYSICS MIDDLE SCHOOL

A bicycle traveled 150 meters west from point A to point B. Then it took the same route and came back to point A. It took a total of 2 minutes for the bicycle to return to point A. What is the average speed and average velocity of the bicycle?

Answers

Answer 1

Answer:

Answer:

2.5 m/s

0 m/s

Explanation:

Average speed is distance over time.

Average velocity is displacement over time.

The bicycle travels 150 meters from A to B, then 150 meters from B to A. So the distance is 300 meters and the displacement is 0 m.

s = 300 m / 120 s = 2.5 m/s

v = 0 m / 120 s = 0 m/s

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Is velocity related to momentum

Answers

yes
momentum=mass x velocity
or you could rearrange the formula to find velocity = momentum/mass (you get this by dividing both sides in the original equation by mass)
you could also get that mass= momentum/velocity (you get this by rearranging both sides of the original equation by velocity)

Yes momentum is expressed as mass * velocity:

p = m * v

p: momentum
m: mass
v: velocity

What impact did Sir Isaac Newton have on modern society?

Answers

Sir Isaac Newton laid the foundations for the creation of modern calculus through his work in the field of mathematics. His discovery of formulas that could be used to derive the areas of curved objects led to many of the mathematical breakthroughs of the last two centuries. He also helped in the field of science by discovering laws such as the universal gravitation law.

What is terrestrial radiation?a. radiation that comes from the sun

b. radiation that is absorbed by the sun

c. radiation that comes from the earth

d. radiation that is absorbed by the earth

Answers

C) Radiation that comes from Earth...... Hope it helps, Have a nice day :)

the answer to this is c hope this helps

Light travels fastest when moving through

Answers

a vaccum unlike sound,light can travel through any matter including a great vacuum of nothing (space)

An airplane is flying at a constant velocity through the air. What is the relationship between the magnitudes of the four forces shown in the diagram? A. L = W; F < D
B. L = W; F = D
C. L = W = F = D
D. L = W; F > D

Answers

Answer:

(B) L=W; F=D

Explanation:

Since the airplane's velocity is constant, the airplane is not accelerating in any direction. In absence of acceleration, all forces acting on the plane are balanced so that the net forces in the horizontal and the vertical directions are zero. Given the drawing, this implies that

Forward force = Drag force (F=D)

Weight = Lift (W=L)

which corresponds to option (B)

(it is not C because nothing in the text says that the vertical and horizontal components have to have same magnitude)

Final answer:

The relationship between the magnitudes of the forces is that lift force is equal to weight force, and drag force is equal to thrust force.

Explanation:

In this scenario, the airplane is flying at a constant velocity, which means that its acceleration is zero. According to Newton's first law of motion, if an object is moving with a constant velocity, the net force acting on it is zero.

Therefore, the relationship between the magnitudes of the four forces shown in the diagram is that the lift force (L) is equal to the weight force (W), and the drag force (D) is equal to the thrust force (F).

So, the correct answer is C. L = W = F = D.