Answer:
a)115 N
b)For father acceleration = 1.69 m/s²
For son acceleration = 3.28 m/s²
Explanation:
Given that
Mass of man(M)= 68 kg
Mass of son (m)= 34 kg
F= 115 N
As we know that from third law of Newtons ,It sates that every action have it reaction in opposite direction but same in magnitude.
So the force exerted by boy on father = 115 N
From Newtons second law of motion
F= m a
F=Force
m= mass
a=acceleration
For father
115 = 68 x a
a=1.69 m/s²
For son
115 = 35 x a'
a'=3.28 m/s²
Answer:
-2.63 Joules
2.63 Joules
Explanation:
= Initial compression = 5.89 cm
= Final compression = -15.4 cm
k = Spring constant = 260 Nm
Work done by a spring is given by
Work done by the spring is -2.63 Joules.
Change in kinetic energy is given by
Here, it is assumed that change in kinetic energy is zero as velocity and amlitude are not mentioned.
So,
The work done by the applied force is 2.63 Joules.
Eyepiece is magnifies the image so you can see it clearly. Compare and contrast how images form in a refracting telescope reflection telescope and microscope. ...Refracting telescope is uses two lenses to locate somethings. Reflecting telescope uses a large concave mirror to gather light.
~Marley
<h2>
Law 1:</h2><h3>An object already in motion stays in motion, unless acted upon by a force.</h3><h3 /><h2>Law 2:</h2><h3>
</h3><h3>f = forces on an object</h3><h3>m = mass of that object</h3><h3>a = acceleration of that object</h3><h3 /><h2>Law 3:</h2><h3>Everything has an equal and opposite reaction.</h3><h3 /><h3>Hope this helps!</h3>
Answer:
In an elastic collision, the total kinetic energy is conserved, while in an inelastic collision, it is not
Explanation:
Let's define the two types of collision:
- Elastic collision: an elastic collision is a collision in which:
1) the total momentum of the system is conserved
2) the total kinetic energy of the system is conserved
Typically, elastic collisions occur when there are no frictional forces acting on the objects in the system, so that no kinetic energy is lost into thermal energy. An example of elastic collision is the collision between biliard balls.
- Inelastic collision: an inelastic collision is a collision in which:
1 ) the total momentum of the system is conserved
2) the total kinetic energy of the system is NOT conserved
In an elastic collision, part of the total kinetic energy is lost (=converted into thermal energy) due to the presence of frictional forces. An example of inelastic collision is the accident between two cars, in which part of the energy is converted into heat.
