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SCORPION-xisa [38]
3 years ago
11

For an investigation, a student measures the speed of a cart as it rolls down a ramp. The student then records data in the table

shown above. Which of these best explains the student’s data?
A.
The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and the ramp.

B.
The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity.

C.
The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.

D.
The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.

Physics
2 answers:
Andrej [43]3 years ago
4 0

Answer:

(nice doge loaf lol) its b

Explanation:

it just makes the most sense

alexgriva [62]3 years ago
3 0

Answer: it’s c

Explanation:I put that as my answer for an assignment and got it right

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A student stands on a scale, and the scale reads 85 N. What is being measured by the scale
Dmitry [639]

Force. Force is measured by newtons, probably because he came up with the equations to calculate force.

Hope this helps!

5 0
3 years ago
A car’s tire rotates 5.25 times in 3 seconds. What is the tangential velocity of the tire?
Lena [83]

The tangential velocity of the car's tire is the product of the angular velocity and radius of the car's tire which is 11(r) m/s.

<h3>Angular velocity of the tire</h3>

The angular velocity of the tire is the rate of change of angular displacement of the tire with time.

The magnitude of the angular velocity of the tire is calculated as follows;

ω = 2πN

where;

  • N is the number of revolutions per second

ω = 2π x (5.25 / 3)

ω =  11 rad/s

<h3>Tangential velocity of the tire</h3>

The tangential velocity of the car's tire is the product of the angular velocity and radius of the car's tire.

The magnitude of the tangential velocity is caculated as follows;

v = ωr

where;

  • r is the radius of the car's tire

v = 11r m/s

Learn more about tangential velocity here: brainly.com/question/25780931

4 0
2 years ago
A runner completes the 300-meter dash in 38 seconds. What is the speed of the runner? Round your answer the answer to the neares
loris [4]

Answer:

speed = 7.9 m/s

Explanation:

speed = total distance / time taken

speed = 300 / 38

speed = 7.89473684 m/s

to the nearest tenth

speed = 7.9 m/s

6 0
2 years ago
Describe the steps used by conventional sewage treatment plants to break down our sewage into a relatively safe effluent that ge
anyanavicka [17]

Answer:

the soild material is allowe to settle into a sludge layer the remaining waste water undergoes a secondart treatment that uses bacteria to break down organic matter

treat water is left to sit while particles settle out, with settle d particles being added to sluudge,

water is disinfeted

Explanation:

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