All categories

3 years ago

A 1-kilogram object is thrown horizontally and a 2-kilogram object is dropped vertically at

Physics

1 answer:

Semenov [28]3 years ago

4 0

Their vertical position will be the same for both at any instant. They will both hit the ground at the same time.

You might be interested in

What is the acceleration of a baseball that has a final velocity of 15.0 m/s when it crosses the plate 2.0 seconds after leaving

Leokris [45]

I think it’s A pretty sure...

3 0

3 years ago

LOTS OF POINTSA rocket of mass 40 000 kg takes off and flies to a height of 2.5 km as its engines produce 500 000 N of thrust.

Svetradugi [14.3K]

Answer:

i) E = 269 [MJ] ii)v = 116 [m/s]

Explanation:

This is a problem that encompasses the work and principle of energy conservation.

In this way, we establish the equation for the principle of conservation and energy.

$E_{k1}+W_{1-2}=E_{k2}\\where:\\E_{k1}= kinetic energy at moment 1\\W_{1-2}= work between moments 1 and 2.\\E_{k2}= kinetic energy at moment 2.$

$W_{1-2}= (F*d) - (m*g*h)\\W_{1-2}=(500000*2.5*10^3)-(40000*9.81*2.5*10^3)\\W_{1-2}= 269*10^6[J] or 269 [MJ]$

At that point the speed 1 is equal to zero, since the maximum height achieved was 2.5 [km]. So this calculated work corresponds to the energy of the rocket.

Er = 269*10^6[J]

ii ) With the energy calculated at the previous point, we can calculate the speed developed.

$E_{k2}=0.5*m*v^2\\269*10^6=0.5*40000*v^2\\v=\sqrt{\frac{269*10^6}{0.5*40000} }\\ v=116[m/s]$

8 0

3 years ago

3. As an object’s temperature increases, the ____________________ at which it radiates energy increases.

Vladimir [108]

Answer:

As an object’s temperature increases, the Rate at which it radiates energy increases.

7 0

3 years ago

Read 2 more answers

If C is the vector sum of A and B, C = A + B, What must be true if C = A + B?. What must be true if C = 0?.

dybincka [34]

A and B are equal vectors

7 0

3 years ago

After clearing the bar on a high jump, you land softly on a giant mattress. landing on a mattress is more comfortable than landi

madam [21]

Answer:

The right approach is Option b (the force..................exert on you).

Explanation:

Even before you fall on something like a soft object, users eventually slow to a halt. You are still giving away all the downward momentum, but progressively although with small powers, you are doing so.
Although you can get injured by massive powers, this gradual displacement is a positive thing. And that is why you have a mattress you would like to settle on.

The other options given are not connected to the situation described. So, the solution here was the right one.

3 0

2 years ago