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stealth61 [152]
3 years ago
13

A physical science teacher wants to demonstrate Newton's laws. She has 2 skateboards and takes them out to a flat parking lot. T

wo students are chosen. Kayla weighs 125 pounds and Steve weighs 175 pounds. Both push off a car with the same force. Which BEST describes the relationship between acceleration and mass?
A Kayla will have a smaller acceleration because she has more mass.
B Steve will have a larger acceleration because he has more mass

C Kayla will have a larger acceleration because she has less mass.
Physics
1 answer:
insens350 [35]3 years ago
3 0

Answer:

C

Explanation:

if the mass is smaller the acceleration is larger

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Please really need help with this one <br> A <br> B<br> C<br> D
Stella [2.4K]

d thought i wouldnt trust me on it

7 0
3 years ago
The massless spring of a spring gun has a force constant k=12~\text{N/cm}k=12 N/cm. When the gun is aimed vertically, a 15-g pro
ASHA 777 [7]

Answer:

0.011 m.

Explanation:

Energy stored in the spring = Energy of the projectile.

1/2ke² = mgh ................ Equation 1

Where k = spring constant, e = extension or compression, m = mass of the projectile, g = acceleration due to gravity, h = height.

make e the subject of the equation

e = √(2mgh/k)............................. Equation 2

Given: k = 12 N/cm = 1200 N/m, m = 15 g = 0.015 kg, h = 5.0 m

Constant: g = 9.8 m/s²

Substitute into equation 2

e = √(2×0.015×5/1200)

e = √(0.15/1200)

e = √(0.000125)

e = 0.011 m.

4 0
3 years ago
the natural process where the sun's energy is trapped by the atmosphere to make the earth warm enough for life is known as globa
alexira [117]
The natural process is called greenhouse effect. This is when the Sun's light enters the Earth, and converts to heat. Light passes through the Earth's atmosphere much easier compared to heat. Because of this, heat is trapped on Earth because it cannot exit the atmosphere as easily as light does.
6 0
4 years ago
When the displacement in SHM is equal to 1/2 of the amplitude xm, what fraction of the total energy is (a) kinetic energy and (b
nikitadnepr [17]

Answer:

Explanation:

Let x₀ be the amplitude , ω be the angular velocity

velocity at displacement  x ,

v = ω \sqrt{(x_0^2-x^2)}

at x =\frac{x_0}{2}

v = ω [ \sqrt{(x_0^2-\frac{x_0}{4} ^2)}

v² =  ω² x\frac{3x_0^2}{4}

1/2 m v²

= 3/8 m x ω²x₀²

Total energy = 1/2 m ω²x₀²

Kinetic energy as fraction of total energy

= 3/8 m x ω²x₀² x 2 /  m ω²x₀²

= 3 / 4

Fraction of potential energy

= 1 - 3/4

1/4

c )

Half kinetic = half potential energy

=  1/4 m ω²x₀²

1/2 m ω²( x₀²- x ² )

x₀²/2  = x₀²- x ²

x² = x₀²/2

x = x₀/√2

3 0
3 years ago
WHAT IS THE NET FORCE REQUIRED TO GIVE AN AUTOMBILE OF MASS 1600KG AN ACCELERATION OF 4.5M/S2?
Fed [463]

Answer:

The required net force has a magnitude of  7200 N

Explanation:

Use Newton's 2nd Law to obtain the answer:

F_{net}= m\,*\,a\\F_{net}=1600 \,*\,4.5 \,= 7200\,\,N

4 0
4 years ago
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