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3 years ago

List at least 3 units of speed circle the unit of speed which is the SI unit

Physics

1 answer:

Stells [14]3 years ago

6 0

Answer: SI Unit is meters per second(m/s)

Explanation:

The three units of speed are:

1. meters per second(m/s)

2. kilometers per hour(km/hr)

3. miles per hour(mph)

SI Unit is meters per second(m/s)

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HOW DO WE HELP OTHERS NOT BE SAD IF THEY DON'T LIKE HUGS?

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3 years ago

Read 2 more answers

Jason launches a model rocket with a mass of 2.0 kg from his spring-powered rocket launcher with a spring constant of 800 N/m. H

Arada [10]

Answer:

121 Joules

6.16717 m

Explanation:

m = Mass of the rocket = 2 kg

k = Spring constant = 800 N/m

x = Compression of spring = 0.55 m

Here, the kinetic energy of the spring and rocket will balance each other

$\frac{1}{2}mu^2=\frac{1}{2}kx^2\\\Rightarrow u=\sqrt{\frac{kx^2}{m}}\\\Rightarrow u=\sqrt{\frac{800\times 0.55^2}{2}}\\\Rightarrow u=11\ m/s$

The initial velocity of the rocket is 11 m/s = u.

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s² = g

$v^2-u^2=2as\\\Rightarrow s=\frac{v^2-u^2}{2a}\\\Rightarrow s=\frac{0^2-11^2}{2\times -9.81}\\\Rightarrow s=6.16717\ m$

The maximum height of the rocket will be 6.16717 m

Potential energy is given by

$P=mgh\\\Rightarrow P=2\times 9.81\times \frac{0^2-11^2}{2\times -9.81}\\\Rightarrow P=121\ J$

The potential energy of the rocket at the maximum height will be 121 Joules

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3 years ago

A motor neuron and all of the skeletal muscle fibers it stimulates are termed a

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Answer:

Motor Unit

Explanation:

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4 years ago

What does the stomach acid have in protein digestion

castortr0y [4]

It contains protease which is the enzyme that breaks down protein

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3 years ago

Which colors of light represents the lowest visible frequency?

kodGreya [7K]

Answer:

Red

Explanation:

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The frequency and Energy has an inverse relationship with the wavelength.

However Red has the longest wavelength of about 620 - 780 nanometer.

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3 years ago