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Triss [41]
3 years ago
8

In the previous question, the person had an initial velocity of 8m/s and a constant acceleration of −4m/s2. How would the maximu

m distance he travels to the right of the origin change if instead his initial velocity were doubled (vx,0=16m/s)?
Physics
1 answer:
oksian1 [2.3K]3 years ago
5 0

Answer:

Distance maximum

Xmax = 32m

Explanation:

Kinematics equation between velocities and distance:

Vf^{2} =Vo^{2} +2ax

For the distance maximum the final velocity is zero:

x = Xmax ⇒ Vf=0

then, the equation becomes:

Xmax= - \frac{Vo^{2}}{2a}

We replace the values for the initial velocity and acceleration

Vo=16m/s; a = -4m/s2

Finally:

Xmax=16^{2} /8=32m

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3 years ago
A particle with charge -40.0nC is on the x axis at the point with coordinate x=0 . A second particle, with charge -20.0 nC , is
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A particle with charge -40.0nC is on the x axis at the point with coordinate x=0 . A second particle, with charge -20.0 nC, is on the x axis at x=0.500 m.

No, there is no point at a finite distance where the electric potential is zero.

Hence, Option D) is correct.

What is electric potential?

Electric potential is the capacity for doing work. In the electrical case, a charge will exert a force on some other charge and the potential energy arises. For example, if a positive charge Q is fixed at some point in space, any other positive charge when brought close to it will experience a repulsive force and will therefore have potential energy.

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4 0
1 year ago
Sam receives the kicked football on the 3 yd line and runs straight ahead toward the goal line before cutting to the right at th
Pie

Answer:

Distance: 21 yd, displacement: 15 yd, gain in the play: 12 yd

Explanation:

The distance travelled by Sam is just the sum of the length of each part of Sam's motion, regardless of the direction. Initially, Sam run from the 3 yd line to the 15 yd line, so (15-3)=12 yd. Then, he run also 9 yd to the right. Therefore, the total distance is

d = 12 + 9 = 21 yd

The displacement instead is a vector connecting the starting point with the final point of the motion. Sam run first 12 yd straight ahead and then 9 yd to the right; these two motions are perpendicular to each other, so we can find the displacement simply by using Pythagorean's theorem:

d=\sqrt{12^2+9^2}=15 yd

Finally, the yards gained by Sam in the play are simply given by the distance covered along the forward-backward direction only. Since Sam only run from the 3 yd line to the 15 yd line along this direction, then the gain in this play was

d = 15 - 3 = 12 yd

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3 years ago
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