What does the slope of the line on this velocity versus time graph represent? A.
positive deceleration

B.
zero acceleration

C.
positive acceleration

D.
negative acceleration

Answers

Answer 1

Answer: What do you mean when you say "this" graph ? I don't see any graph.

First of all, I'm sure you don't have a "velocity versus time" graph.
You may have a "speed versus time" graph, that doesn't show any
information about the direction of the motion.

As you look at your graph ... a feat that's impossible for me ...

-- If the line is horizontal, then speed is not changing. If the direction
of motion is also not changing, then there is zero acceleration. Sadly,
the graph most likely doesn't carry any information about the direction.
It's possible that the speed is constant but the direction is changing.
Then acceleration isn't zero, but you can't tell that from the graph.

-- If the line is proceeding upward from left to right, whether it's straight
or curving, then there is positive acceleration.

-- If the line is proceeding downward from left to right, whether it's straight
or curving, then there is negative acceleration, or what some people might
call "positive deceleration".

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Find the slope of the line that passes through the pair of points (6, 7) and (9, 2). Find the slope of the line that passes through the pair of points (17, 9) and (5, 29).

Answers

As you have probably already learned, we calculate slope by dividing the change in vertical position by the change in horizontal position. Δy/Δx
Question 1: (9-6)/(2-7)=-3/5
Question 2: (5-17)/(29-9)= -12/20, which simplifies to -3/5

Answer:

Explanation:

What is a caliper used for?to make a precise measurement of volume
to make a temperature measurement with low precision
to make a volume measurement with low precision
to make a precise measurement of length

Answers

Answer;

To make a precise measurement of length

Explanation;

Calipers are used to make a precise measurement of length such as diameters of circular solids, such as the diameter of a pipe.

All calipers may be used to take the same measurements, that is the inside, outside, depth and the step measurements.Those calipers such as vernier caliper that can be used to measure the external size of an object have a pair of jaws.
Vernier caliper is a type of caliper that is used to precisely measure outside dimensions such as length, width, or diameter.

a caliper is used to make a precise measurement of length within tubing or on nuts/bolts, or anything really

A typical mirror in a person's house would be an example of a/an _______ mirror. A. concave
B. convex
C. angular
D. plane

Answers

A typical mirror in a person's house would be anexample of a/an plane mirror. Lenses and mirrors are different. Lenses is atransparent tool containing two curved surfaces used to refract images – eitherconverge or diverge. Mirrors on the otherhand, show what the real image is without distortion.

Penn Foster Students: PLane

Every charged particle produces ?

Answers

Every charged particle produces a magnetic field.

A hailstone traveling with a velocity of 43 meters/second comes to a virtual stop 0.28 seconds after hitting water. What is the magnitude of its acceleration in the water?A. 12 meters/second2
B. 1.5 × 102 meters/second2
C. 78.6 meters/second2
D. 6.5 × 10-3 meters/second2

Answers

Magnitude of acceleration = (change in speed) / (time for the change) .

Change in speed = (ending speed) - (starting speed)

= zero    - (43 m/s)

=    -43 m/s .

Magnitude of acceleration = (-43 m/sec) / (0.28 sec)

      = (-43 / 0.28) (m/sec) / sec

      =    153.57... m/s²

      = 1.5... x 10² m/s² .

Answer:

1.5*10^2 meters/seconds^2

Explanation:

I got 100% on my test

Displacement vectors A, B, and C add up to a total of zero. Vector A has a magnitude of 1550 m and a direction of 25.6° north of east. Vector B has a direction of 41.0° east of south, and vector C has a direction of 35.1° north of west. Find the magnitudes of vector B and vector C.

Answers

Answer:

B= 5626.77 m

C= 6220. 5 m

Explanation:

Because the sum of the vectors must be equal to zero, then the result force in x and the result force in y must be zero.

We propose 2 equations x-y to solve the problem:

Rx :resulting from forces at x

Ry: resulting from forces at y

Rx= Ax+Bx+Cx=0

Ry= Ay+By+Cy=0

Ax =1550 *cos25.6°= 1397.84

Ay =1550 *sin25.6° = 669.73

Bx= B*sin41° = 0.656B

By= -B*cos41° = -0.7547 B

Cx= -C*cos35.1°= -0.8181 C

Cy= C* sin35.1° = 0.575 C

Rx= 1397.84+0.656B-0.8181 C=0

Ry= 669.73-0.7547 B+ 0.575 C=0

System of 2 equations with 2 incognites:

+0.656B-0.8181 C= - 1397.84

-0.7547 B+ 0.575 C= -669.73

Resolving the system:

B= 5626.77 m

C= 6220. 5 m

Final answer:

Since the vectors A, B, and C add to zero, their x and y components should add up to zero as well. This information helps create a system of linear equations to solve for the magnitudes of vectors B and C.

Explanation:

The subject matter of this vector question involves physics, specifically vector addition and vector resolution. The key point you must understand here is that these vectors add up to a total of zero. This gives us an equation to solve for the magnitudes of the other vectors, B and C.

First, break each vector into its x (east-west) and y (north-south) components and set up the system of equations. For example, Ax = 1550 cos(25.6°), Ay = 1550 sin(25.6°). Notice that the direction for vector B is given as east of south, which means B's x component is negative and its y component is positive.

When these are added together they should equal zero (since A + B + C = 0), so you will have two equations to solve for the magnitudes of B and C. This is a system of linear equations you'll need to solve, either manually or with calculator.