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Lunna [17]
3 years ago
15

Measure if how far an object has moved.

Physics
1 answer:
djyliett [7]3 years ago
5 0
You can't really measure how far an object has moved. If you weren't
watching it the whole time, you can only measure how far it <em>IS</em> now from
where it started, but you don't know what route it traveled to get there.

The distance between where it started and where it ended up is called
the object's "displacement".  That's the length of the straight line between
those two points.  And it's also the shortest possible distance the object
could have moved in order to get to where it is now.

Funny thing:  When you walk all the way around a yard, a track, or a building,
or drive a car one lap around the track, your <em>displacement</em> is zero, because
you end up in the same place you started from, and the distance is zero.
If somebody saw you before and after, but didn't see you walk or drive,
they wouldn't know that you had moved at all.
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What is the answer to these questions?
Oksana_A [137]

Answer:

THES IS NOT

Explanation:

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7 0
3 years ago
A kangaroo jumps straight up to a vertical height of 1.45 m. How long was it in the air before returning to Earth?
dexar [7]

Answer:

1.08 s

Explanation:

From the question given above, the following data were obtained:

Height (h) reached = 1.45 m

Time of flight (T) =?

Next, we shall determine the time taken for the kangaroo to return from the height of 1.45 m. This can be obtained as follow:

Height (h) = 1.45 m

Acceleration due to gravity (g) = 9.8 m/s²

Time (t) =?

h = ½gt²

1.45 = ½ × 9.8 × t²

1.45 = 4.9 × t²

Divide both side by 4.9

t² = 1.45/4.9

Take the square root of both side

t = √(1.45/4.9)

t = 0.54 s

Note: the time taken to fall from the height(1.45m) is the same as the time taken for the kangaroo to get to the height(1.45 m).

Finally, we shall determine the total time spent by the kangaroo before returning to the earth. This can be obtained as follow:

Time (t) taken to reach the height = 0.54 s

Time of flight (T) =?

T = 2t

T = 2 × 0.54

T = 1.08 s

Therefore, it will take the kangaroo 1.08 s to return to the earth.

3 0
3 years ago
What provides the force on the person on the passenger seat?
frutty [35]

When the car speeds up, slows down, or goes around a curve,
passengers need a force applied to them to make them do the
same thing, otherwise they won't keep up with the car. 

The force on the passenger is applied by means of friction between
the upholstery and the seat of his pants, and also by the seat-back
or his seat-belt.

4 0
3 years ago
Read 2 more answers
Magnet A has twice the magnetic field strength of magnet B and pulls on magnet B with a force of 100 N. The amount of force that
son4ous [18]

The force exerted by the magnetic in terms of the magnetic field is,

F\propto B

Where B is the magnetic fied strength and F is the force.

Thus, if the magnetic A has twice magnetic field strength than the magnet B,

Then,

B_A=2B_B

Thus, the force exerted by the magnet B is,

\begin{gathered} F_B\propto B_B \\ F_B\propto\frac{B_A}{2} \\ F_B=\frac{F_A}{2} \\ F_B=\frac{100}{2} \\ F_B=50\text{ N} \end{gathered}

Thus, the force exerted by the magnet B on magnet A is 50 N.

The force exerted by the magnet A exerts on the magnet B is exactly 100 N as given.

Hence, the option B is the correct answer.

3 0
1 year ago
What force cause the rod to become charged
gtnhenbr [62]

Answer:

electricity

If a rod is charged it is because of the electrical force acting on it

6 0
3 years ago
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