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3 years ago

A5 kg frisbee is thrown from rest to a final speed of 12 m/s. What is the impulse of the frisbee?

Physics

1 answer:

lesya692 [45]3 years ago

3 0

Answer:

60kgm/s

Explanation:

Given parameters:

Mass of frisbee = 5kg

Final speed = 12m/s

Unknown:

Impulse of the frisbee = ?

Solution:

The impulse of the frisbee is the same as the change in momentum.

It is given as:

Impulse = mass (Final velocity - Initial velocity)

Impulse = 5(12 - 0) = 60kgm/s

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A crate of mass 10.0 kg is pulled up a rough incline with an initial speed of 1.50m/s . The pulling force is 100 N parallel to t

sergey [27]

167.67 Joules of work are done by the gravitational force on the crate.

Force is defined as the product of the mass of the object and acceleration. The SI unit of the force of Newton.

Gravitational force is the force applied by gravity on an object. The gravity of the earth is 9.8 m/s².

Force = Mass × Acceleration

F = m × a

Mass of the crate = 10 kg

The initial speed of the crate = 1.50 m/s

The pulling force = 100 N

Horizontal angle made by the crate = 20 °

Coefficient of kinetic friction = 0.400

The crate is pulled to a height of 5 m.

$Sin θ= \frac{height}{distance}$

$= \frac{h}{d}$

$h = dSin θ$

Work done by the gravitational force on the crate is,

Work done by gravitational force = mass × gravity × height

$W_{g} = mgh$

$W_{g} = m \times g \times d \times sinθ$

$= 10 \times 9.8 \times 5 \times sin20°$

$= 167.67 \: J$

Therefore, 167.67 Joules of work is done by the gravitational force on the crate.

To know more about force, refer to the below link:

brainly.com/question/13191643

#SPJ4

5 0

1 year ago

A 50kg boy runs at a speed of 10.0m/s and jumpsonto a cart

andriy [413]

Answer:

the mass of the cart is 150 kg

Explanation:

given,

mass of boy(m) = 50 kg

speed of boy (v)= 10 m/s

initial velocity of cart (u) = 0

final velocity of cart(V) = 2.5 m/s

mass of the cart(M) = ?

m v + M u = (m + M ) V......................(1)

50× 10 + 0 = (50 + M ) 2.5

M = $\dfrac{500}{2.5} - 50$

M = 150 Kg

hence, the mass of the cart is 150 kg

4 0

2 years ago

Read 2 more answers

The sketch below shows some of the insides of a stereo speaker. Running current through the wire, which is wrapped around the ba

VARVARA [1.3K]

Energy transformation, also termed as energy conversion, is the process of changing energy from one of its forms into another. In physics, energy is a quantity that provides the capacity to perform many works—think of lifting or warming an object. In addition to being convertible, energy is transferable to a different location or object, but it cannot be created or destroyed.

Energy in many of its forms may be used in natural processes, or to provide some service to society such as heating, refrigeration, lighting or performing mechanical work to operate machines. For example, in order to heat your home, your furnace can burn fuel, whose chemical potential energy is thus converted into thermal energy, which is then transferred to your home's air in order to raise its temperature.

In another example, an internal combustion engine burns gasoline to create pressure that pushes the pistons, thus performing work in order to accelerate your vehicle, ultimately converting the fuel's chemical energy to your vehicle's additional kinetic energy corresponding to its increase in speed.

Contents

1 Entropy and limitations in conversion of thermal energy to other types

2 Transformation of kinetic energy of charged particles to electric energy

3 History of energy transformation from the early universe

4 Examples

4.1 Examples of sets of energy conversions in machines

4.2 Other energy conversions

5 See also

6 References

3 0

3 years ago

Read 2 more answers

Please help with both questions thank you!

Katen [24]

I think is:

(4)Inner core

(4)different Kingdome different species

hope this help :)

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2 years ago

The once-ler used what to make thneeds

Bogdan [553]

He used truffula trees to make thneeds

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3 years ago