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kari74 [83]
3 years ago
8

A track coach measures the 100-meter time of a track athlete. The runner completes the distance in 11.5 seconds. If the stopwatc

h has an uncertainty of 1.7%, what is the amount of uncertainty in the time?(1 point)
11.5 s ± 0.19 s
11.5 s plus or minus 0.19 s

11.5 s ± 0.20 s
11.5 s plus or minus 0.20 s

11.5 s ± 0.1955 s
11.5 s plus or minus 0.1955 s

11.5 s ± 0.196 s
11.5 s plus or minus 0.196 s
Physics
2 answers:
Andrei [34K]3 years ago
5 0

Answer:11.5 s plus or minus 0.196 s

Explanation:

Inessa05 [86]3 years ago
5 0

The uncertainty in the time of the runner to complete the distance is 11.5 s ± 0.1955 s

The given parameters;

length of the track, d = 100 m

time to complete the track, t = 11.5 s

the uncertainty, = 1.7%

The uncertainty in the time of the runner to complete the distance is calculated as;

the uncertainty = ± (0.017 x 11.5)

the uncertainty = ± 0.1955 s

Thus, the uncertainty in the time of the runner to complete the distance is 11.5 s ± 0.1955 s

Learn more here: brainly.com/question/22722990

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Select the correct answer from each drop-down menu. complete the sentence to describe the distance and ruler postulates. between
Tresset [83]

This question is an illustration of the distance postulate.

<h3>What is distance postulate ?</h3>

The distance between any two different points equates to a single positive real integer, according to the postulate of distance.

The full text is: The distance is a positive unique integer between every pair of different locations.

Consider two separate points A and B as an example.

The distance between A and B is the integer that represents the size of A and B.

The positive number (i.e. the distance) between A and B would be:

d= B-A

d = 6 - 1

d = 1

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3 0
2 years ago
A 1200 Kg car rounds a corner of radius r = 45m. If the coefficient of static friction between the ties and the road is us = 0.8
Vaselesa [24]

Answer:

The greatest speed of the car is 19.36m/s

Explanation:

The maximum speed the car will attain without skidding is given by:

F= uN = umg ...eq1

But F = mv^2/r

mv^2/r = umg

Dividing both sides by m, leaves you with:

V= Sqrt(ugr)

Where u = coefficient of static friction

g = acceleration due to gravity

r = raduis

Given:

U = 0.82

r=0.82

g= 9.8m/s

V = Sqrt(0.82 × 9.8 × 45)

V = Sqrt(374.85)

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5 0
3 years ago
What factors cause a rock to become metamorphic
Lynna [10]
Pressure and heat. I hope this helps
3 0
3 years ago
Read 2 more answers
How do I do these? Please help
ICE Princess25 [194]

Explanation:

4a)the displacement is the distance moved in a direction but since no direction is given, the displacement is equal to the distance

b) the distance moved is 400m because that's the length of the track

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a 100 g cart initially moving at 0.5 m/s collides elastically from a stationary 180 g cart. a) using the equation in the theory,
cupoosta [38]

A 100 g cart is moving at 0.5 m/s that collides elastically from a stationary 180 g cart. Final velocity is calculated to be 0.25m/s.

Collision in which there is no net loss in kinetic energy in the system as a result of the collision is known as elastic collision . Momentum and kinetic energy both are conserved quantities in elastic collisions.

Collision in which part of the kinetic energy is changed to some other form of energy is inelastic collision.

For an elastic collision, we use the formula,

m₁V₁i+ m₂V₂i = m₁V1f + m₂V₂f

For a perfectly elastic collision, the final velocity of the 100g cart will each be 1/2 the velocity of the initial velocity of the moving cart.

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