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maw [93]
3 years ago
9

Please Help Me!!!!!!!​

Physics
1 answer:
Elden [556K]3 years ago
5 0

Answer:

B

Explanation:

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"If air in a pump is squeezed more, then the air gets hotter because energy is added to it" is a good hypothesis that could lead to new experimentation.

<u>Option: C</u>

<u>Explanation:</u>

If we use a pump to inflate a basketball, we initially pull the handle to draw air to fill the sphere in. As we move it down we apply a great deal of force to pump in air through the pin's tiny hole because of this resistance force in the air we find the tube warmed.

A needle of ball pump is a metal tube in which air, from an inflating pump to a sports ball, moves through it. In continuous-flow operation, pumps are often used and built to produce comparatively little pressure towards a free-flowing environment with limited back pressure. Such pumps have a fixed configuration and work freely along their power curve as circumstances change.

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2 years ago
Which of the following is a force or motion that
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Answer: this answer is D. That's what I think it is

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a car initially at rest can accelerate at 7 m/s^2 how long will it take the car to reach 60 m/s and how far will it travel durin
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1. The time taken for the car to reach a velocity of 60 m/s is 8.57 s

2. The distance travelled during the time is 257.14 m

<h3>What is acceleration? </h3>

The acceleration of an object is defined as the rate of change of velocity which time. It is expressed as

a = (v – u) / t

Where

  • a is the acceleration
  • v is the final velocity
  • u is the initial velocity
  • t is the time

1. How to determine the time

  • Initial velocity (u) = 0 m/s
  • Acceleration (a) = 7 m/s²
  • Final velocity (v) = 60 m/s
  • Time (t) =?

a = (v – u) / t

Thus,

t = (v – u) / a

t = (60 – 0) / 7

t = 8.57 s

2. How to determine the distance

  • Initial velocity (u) = 0 m/s
  • Acceleration (a) = 7 m/s²
  • Final velocity (v) = 60 m/s
  • Distance (s) = ?

v² = u² + 2as

60² = 0² + (2 × 7 × s)

3600 = 0 + 14s

3600 = 14s

Divide both sides by 14

s = 3600 / 14

s = 257.14 m

Learn more about acceleration and velocity:

brainly.com/question/491732

brainly.com/question/19466392

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9 months ago
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Answer:

Frick is pushing harder

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3 years ago
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