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3 years ago

A ball is dropped from rest. Its energy is transformed from ________.

Physics

1 answer:

melisa1 [442]3 years ago

8 0

Answer:

gravitational potential energy

When the ball falls, some of its gravitational potential energy is converted to other forms of energy, such as kinetic energy and rotational energy. When it rebounds, these other forms of energy is converted back to gravitational potential energy.

Explanation:

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Gravity causes objects to be attracted to one another. This attraction keeps our feet firmly planted on the ground and causes th

aev [14]

Answer:

A) G = m³/kg.s²

B) E = kg.m²/s²

Explanation:

The given relation is:

F = Gm₁m₂/r²

where, the units of all variables are:

F = Force = kg.m/s²

m₁ = m₂ = mass = kg

r = distance = m

G = Gravitational Constant = ?

Therefore,

kg.m/s² = G(kg)(kg)/m²

(kg.m/s²)(m²/kg²) = G

G = m³/kg.s²

The given equation is:

E = mc²

where, the units of all variables are:

m = mass = kg

c = speed = m/s

E = Energy = ?

Therefore,

E = (kg)(m/s)²

E = kg.m²/s²

This is the correct answer, which is not present in any option.

4 0

4 years ago

Which statement below could be used as evidence to support the claim that using nuclear energy to produce electricity is better

Alexxx [7]

Answer:

You didn't give the information needed for the answer bud

Explanation:

8 0

3 years ago

on earth a block is placed on a frictionless table. When a 50 North horizontal force is applied to the block, it accelerates at

melamori03 [73]

As per Newton's II law we know that

$F = ma$

here

F = applied unbalanced force

m = mass of object

a = acceleration of object

now it is given that force F = 50 N North applied on block on earth due to which block will accelerate by 4 m/s^2

so here from above equation

$50 = m* 4$

$m = \frac{50}{4} = 12.5 kg$

Now we took another situation where block is placed on surface of moon and again force F = 25 N is applied on the block

So we will again use Newton's II law

$F = ma$

$25 = 12.5 * a$

$a = \frac{25}{12.5}$

$a = 2 m/s^2$

so block will accelerate on moon by acceleration 2 m/s^2

5 0

3 years ago

Which type of mirror causes beams of light to spread apart

Serggg [28]

Answer: is C
Expiation: you can find the answer on quizlet and it’s diverging mirror so the answer is C

4 0

4 years ago

Suppose your car accelerates from rest to 9 m/s in 2 s. Assume that the acceleration is constant in this time interval. A. What

Stolb23 [73]

Answer :

(a) The acceleration of the car is, $4.5m/s^2$

(b) The distance covered by the car is, 9 m

Explanation :

By the 1st equation of motion,

$v=u+at$ ...........(1)

where,

v = final velocity = 9 m/s

u = initial velocity = 0 m/s

t = time = 2 s

a = acceleration of the car = ?

Now put all the given values in the above equation 1, we get:

$9m/s=0m/s+a\times (2s)$

$a=4.5m/s^2$

The acceleration of the car is, $4.5m/s^2$

By the 2nd equation of motion,

$s=ut+\frac{1}{2}at^2$ ...........(2)

where,

s = distance covered by the car = ?

u = initial velocity = 0 m/s

t = time = 2 s

a = acceleration of the car = $4.5m/s^2$

Now put all the given values in the above equation 2, we get:

$s=(0m/s)\times (2s)+\frac{1}{2}\times (4.5m/s^2)\times (2s)^2$

By solving the term, we get:

$s=9m$

The distance covered by the car is, 9 m

3 0

3 years ago