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leva [86]
4 years ago
9

Force exerted by a person or object is called

Physics
1 answer:
vaieri [72.5K]4 years ago
6 0

Force exerted by a person or thing is called _____ force. applied. A change in the speed or direction of an object is called. acceleration. Force is a vector.

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nika2105 [10]

please give me brainlest!!

the answer is A.

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Why did scientists agree to use one system of measurement
Zolol [24]
To make it easier to share data and experimental results with other scientists from all over the world. 
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4 years ago
Read 2 more answers
You have a grindstone (a disk) that is 95.2 kg, has a 0.399 m radius, and is turning at 93 rpm, and you press a steel axe agains
olya-2409 [2.1K]

Answer:

angular acceleration is -0.2063  rad/s²

Explanation:

Given data

mass m = 95.2 kg

radius r = 0.399 m

turning ω = 93 rpm

radial force N  = 19.6 N

kinetic coefficient of friction  μ = 0.2

to find out

angular acceleration

solution

we know frictional force that is = radial force × kinetic coefficient of friction

frictional force = 19.6 × 0.2

frictional force = 3.92 N

and

we know moment of inertia  that is

γ =  I ×α = frictional force × r

so

γ  = 1/2 mr²α

α  = -2f /mr

α  = -2(3.92) /95.2 (0.399)

α  = - 7.84 / 37.9848 = -0.2063

so angular acceleration is -0.2063  rad/s²

3 0
3 years ago
A greyhound has a mass of 35 kg and can run at a speed of 20 m/s. What is the kinetic energy that a greyhound can achieve
prisoha [69]

Hi there!

Recall the equation for kinetic energy:

\large\boxed{KE = \frac{1}{2}mv^2}

KE = Kinetic energy (J)

m = mass (kg)

v = velocity (m/s)

Plug in the given values:

KE = \frac{1}{2}(35)(20^2) = \boxed{7000 J}

7 0
3 years ago
A falling object with a mass of 2.55 kg encounters 4.0 N of air resistance. What is the acceleration of the object? (Choose up t
mel-nik [20]

The acceleration of the falling object with a mass of 2.55 kg that encounters 4.0 N of air resistance is 1.57m/s².

<h3>How to calculate acceleration?</h3>

Acceleration is change of velocity with respect to time (can include deceleration or changing direction).

The acceleration of a body can be calculated by using the following expression;

a = F/m

Where;

  • a = acceleration (m/s²)
  • F = force (N)
  • m = mass (kg)

According to this question, a mass of 2.55 kg encounters 4.0 N of air resistance. The acceleration of the object can be calculated as follows:

a = 4N ÷ 2.55kg

a = 1.57m/s²

Therefore, 1.57m/s² is the acceleration of the object.

Learn more about acceleration at: brainly.com/question/28767690

#SPJ1

4 0
1 year ago
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