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Dafna11 [192]
3 years ago
11

A car goes East from 2 m/s to 16m/s in 3.5s. What is the Car's acceleration?

Physics
1 answer:
BaLLatris [955]3 years ago
8 0
A=v1+v2 / t
2+16/3.5=?
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what is the rate of acceleration of a 2,000-kg truck if a force of 4,200n is used to make it start moving forward
Basile [38]
I have concluded that the formula for this equation would be F = ma, therefore the equation would look like this:


F = ma
F = 4,200n/ 2,000 kg
   = 2.1

The rate of acceleration is 2.1, hopefully I this will be of assistance to you. :)
8 0
3 years ago
92.BIO In an emergency situation,
mojhsa [17]

Based on the principle of equilibrium of forces:

  • the tension T, in the strap is 10.2 N
  • thehorizontal component of the reaction, Rx is 6.56 N
  • thevertical component of the reactionary force, Ry is 7.84 N

<h3>What is tension?</h3>

Tension is a type of force that is transmitted through a flexible medium such as a cable, wire or string pulled tight by forces acting from opposite ends.

The tension in the strap is calculated as follows:

Taking sum of moments from the right end as equal to zero:

mg × l/2 = Tsinθ × l

T = mg/2sinθ

T = 1.60 × 9.8 / 2 sin 50°

T = 10.2 N

Calculating the components of the reac-

reac-tionary force:

  • Horizontal component is Rx
  • Vertical component is Ry

From Newton's third law:

Rx = Tcosθ

Rx = 10.2 × cos 50°

Rx = 6.56 N

Ry - Tsinθ = 0

Ry = Tsinθ

where;

T = mg/2sinθ

Ry = mgsinθ/2sinθ

Ry = mg/2

Ry = 7.84 N

Learn more about tension at: brainly.com/question/24994188

6 0
2 years ago
How are land-use laws in the United States different from the land-use laws inherited from England?
ycow [4]
<span>Private property owners must allow for public access and use.</span>
7 0
4 years ago
Read 2 more answers
Longitudinal waves do not have
soldier1979 [14.2K]
E. Nonsense longitudinal waves have all of these properties
8 0
4 years ago
A bowling ball (mass = 7.2 kg, radius = 0.15 m) and a billiard ball (mass = 0.31 kg, radius = 0.028 m) may each be treated as un
loris [4]
<span>4.7x10^-9 newtons Since both the billiard ball and the bowling ball are uniform spheres, you can simplify the math by assuming that both are gravitational point sources centered within each sphere. And since the gravitational attraction increases as the bodies move closer together, you want to place them as close as possible to each other which would be touching. So when touching, the distance between the two point sources of gravity would be the sum of their radiuses. 0.15m + 0.028m = 0.178m The formula for gravitational attraction is F = G(m1m2)/(r^2) G = 6.67x10^-11 m^3/(s^2 kg) m1, m2 = masses r = radius. So substituting the known values gives F = 6.67x10^-11 m^3/(s^2 kg) (7.2 kg * 0.31 kg) / (0.178 m^2) F = 6.67x10^-11 m^3/(s^2 kg) (2.232 kg^2) / (0.031684 m^2) F = 6.67x10^-11 m/(s^2) (2.232 kg) / (0.031684) F = 6.67x10^-11 m/(s^2) 70.44565 kg F = 4.69872x10^-9 kg m/s^2 F = 4.69872x10^-9 newtons Since the number of significant figures provided is only 2, the result should be rounded to 2 significant digits giving a result of 4.7x10^-9 newtons</span>
6 0
4 years ago
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