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Bess [88]
3 years ago
6

Abigail runs one complete lap (400m) around the track, while Gabi runs a 50 meter dash in a straight line. Which runner had a gr

eater displacement?
Physics
2 answers:
MissTica3 years ago
5 0

Answer:

The distance of one lap on this track from the start line to the finish line is 400 meters. Two laps around the track is 800 meters, half a lap is 200 meters, and so on.

    Remember, displacement is the direction from the starting point and the length of a straight line from the starting point to the ending point. If a runner was going to run 400 meters (one lap around the track), they would start and stop at the same place on the track. Therefore, their displacement would be 0.

 

Explanation:

hope this helped

Ipatiy [6.2K]3 years ago
4 0

Answer:

\boxed {\boxed {\sf Gabi \ had \ greater \ displacement}}

Explanation:

Displacement is the change in the position of an object.

Abigail runs a complete lap around the track, which is 400 meters. Even though she ran 400 meters, she has <u>no displacement.</u> If she starts and ends at the same spot, there is no change in position.

Gabi runs a 50 meter dash in a straight line. Gabi has <u>50 meters of displacement</u>. She runs in a straight line and is 50 meters away from where she began.

While Abigail ran the farther distance, <u>Gabi had the greater displacement.</u>

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If a force acting on an object is multiplied how is product called work?
Assoli18 [71]
Work is equal to the force applied to an object multiplied by the distance it had travelled. This is work as long as the force and the direction of the distance in going in the same direction.

It is work because you're applying a force on an object to move it.

For example, work is done when you push a box across the floor, but work is not done when you lift the box up and then walk it across the room. This is because the force on the box is upwards since you're lifting it and the direction of the distance is left or right so the directions are not the same.
6 0
3 years ago
On a frozen pond, a 8.54-kg sled is given a kick that imparts to it an initial speed of ð£0=1.87 m/s. The coefficient of kinetic
zhannawk [14.2K]

Answer:2.05 m

Explanation:

Given

Mass of sled m=8.54 kg

initial speed u=0.187 m/s

coefficient of kinetic Friction \mu _k=0.087

According to work-energy theorem work done by all the forces is change in Kinetic energy

W_{friction}=\frac{1}{2}mv_i^2-\frac{1}{2}mv_f^2

\mu _kmg\times d=\frac{1}{2}\times 8.54\times 1.87^2 ,where d= distance moved

0.087\times 8.54\times 9.8\times d=14.93

d=\frac{14.93}{7.281}

d=2.05 m

4 0
3 years ago
What is the instantaneous speed of the object after the five seconds?
OverLord2011 [107]

Answer:

12.5 m/s

Explanation:

In a acceleration time graph the area under the curve gives the change in velocity of the object. Here object starts at rest and therefore initial velocity is 0. After 5 seconds acceleration is 5m/s2.

change in velocity=area under the curve

change in velocity= 0.5*acceleration* change in time

v-0=0.5*5*5

v=12.5 m/s

7 0
4 years ago
A circular coil has a 18.0 cm radius and consists of 25.0 closely wound turns of wire. An externally produced magnetic field of
djverab [1.8K]

Answer:

The magnetic flux links to its turns = 7.6 \times10^{-3} Wb.

Explanation:

Given :

Radius of circular coil = 18 \times 10^{-2} m

Number of turns = 25

Magnetic field = 3 \times10^{-3} T

Magnetic flux (Φ) is a measure of the magnetic field lines passes through a given area. The unit of magnetic flux is weber (Wb).

We know that,

⇒    Φ = BA

Where B = ext. magnetic field, A = area of loop or coil.

But here given in question, we have turns of wire so our above eq. modified as follows.

⇒   Φ = NBA

Where N = no. of turns.

∴    Φ = 25 \times 3 \times 10^{-3}  \pi (18 \times10^{-2} )^{2}

     Φ = 7.6 \times 10^{-3} Wb

Thus, the magnetic flux links to its turns = 7.6 \times 10^{-3} Wb

3 0
4 years ago
A horizontal line on a velocity/time graph shows ____ acceleration.
Novay_Z [31]

Answer:

Zero (0)

Explanation:

A horizontal line will be no movement of negative of positive acceleration

6 0
3 years ago
Read 2 more answers
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