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ExtremeBDS [4]
3 years ago
15

Explain why the duster accelerates different rates when different surfaces are in contact with the track

Physics
2 answers:
vichka [17]3 years ago
8 0

Answer:

Because on different surfaces there's more/less friction. Smooth surfaces will allow the duster to accelerate while rough surfaces will decrease the acceleration.

grandymaker [24]3 years ago
4 0

Answer:

Because of the difference in the magnitude of friction.

Explanation:

Friction is defined as the force which is produced between the two surfaces when these two surfaces are in contact with each other.

When we observing the different surfaces there will be different value of friction it is less or high with respect to different surfaces.

Smooth surfaces which posses less friction allow duster to accelerate while on the other hand rough surface will decrease the acceleration of the duster due to high friction.

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3 years ago
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A motorcycle stops at a red light and then gains a speed of 12 m/s in 15s. What's its acceleration?
erastova [34]

Option a) 0.8 m/s² is the correct answer

the acceleration of the motorcycle is 0.8 m/s²

Given the data in the question;

Since the motorcycle stopped then, initial speed u = 0 m/s

final speed v = 12 m/s

time t = 15 s

acceleration = ?

To get our acceleration, we use the first equation of motion.

This equation states that;

v = u + at

so, we simply substitute in our given values

12 m/s = 0 m/s + ( a * 15s )

12 m/s = ( a * 15 s )

so we find a

a = \frac{12m/s}{15s}

a = 0.8 m/s^2

Therefore, the acceleration of the motorcycle is 0.8 m/s²

Option a) 0.8 m/s² is the correct answer

for more on this topic, visit brainly.com/question/17418101?referrer=searchResults

8 0
2 years ago
There is danger of a vehicle skidding on a wet road.
matrenka [14]

Assertion(A):'

There is danger of a vehicle skidding on a wet road.

<h3>Reason (R) : </h3>

The tyres of the vehicle lose their grip on the road due to increase in friction due to presence of water on the road.

Answer:-

  • Assertion is true
  • Reason is true
  • Reason is the perfect explanation of Assertion
6 0
3 years ago
With your hand parallel to the floor and your palm upright, you raise a 3-kg book upward with an acceleration of 2 m/s2. what is
kirza4 [7]

35N i don´t know why

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3 years ago
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HELP PLEASE<br>Can someone please explain to me why the answer would be 2.45m/s?
marissa [1.9K]
It's basically asking for the acceleration. When an object is in free fall, the acceleration is just gravity. so in this case ∆v = 2.45 because it is the gravity on that planet.
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3 years ago
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