If a Man suit a spare at a place where

On the planet Gizmo, the inhabitants travel by high speed trains that run on air tracks much like the air track you used in lab.

Shtirlitz [24]

Answer:

$m_2=33833.33\ kg$

Explanation:

It is given that,

Mass of the train car, $m_1=8700\ kg$

Initial speed of the train car, $u_1=11\ m/s$

Initial speed of the second car, $u_2=2.2\ m/s$

After the collision, both cars stick together and move off with a speed of 4.00 m/s, V = 4 m/s

Let $m_2$ is the mass of the second car. It can be calculated using the conservation of momentum. In case of inelastic collision, after collision both objects move with a common speed.

$m_1u_1+m_2u_2=(m_1+m_2)V$

$m_1u_1+m_2u_2=m_1V+m_2V$

$m_1(u_1-V)=m_2(V-u_2)$

$m_2=\dfrac{m_1(u_1-V)}{(V-u_2)}$

$m_2=\dfrac{8700(11-4)}{(4-2.2)}$

$m_2=33833.33\ kg$

So, the mass of the second car is 33833.33 kg. Hence, this is the required solution.

8 0

2 years ago

Difference between basic units and derived unit

Molodets [167]

Answer:

Basic units=those units of measurement which do not depend upon any other units are called basic units. Example length, mass, time, current etc. 

Derived units=those units which are expressed in terms of fundamental units are called derived units. Example area, volume, density etc. 

4 0

2 years ago

Find the velocity at which the bowling ball must move for its kinetic energy to be equal to that of the meteorite.

Vikentia [17]

Answer:

In classical mechanics, kinetic energy (KE) is equal to half of an object's mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

Explanation:

BOOM!!!

7 0

2 years ago

Metals are good conductors of electricity because __________ . A) they are easily reduced and oxidised. B) they are easily ionis

Advocard [28]

Answer:

a

Explanation:

because they are easily reduced and oxidised

3 0

2 years ago

What instrument can be used to show the shape of a sound wave?

mafiozo [28]

"Oscilloscope" can be used to show the shape of a sound wave

Hope this helps!

7 0

2 years ago