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3 years ago

What is Newton's Second Law?

Physics

2 answers:

Rudiy273 years ago

8 0

Answer:

An object's acceleration depends on its mass and on the net force acting on it.

Explanation:

Newton's second law states that the acceleration of an object is directly related to the net force and inversely related to its mass. Acceleration of an object depends on two things, force and mass.

Sever21 [200]3 years ago

5 0

Answer:

3.An object's acceleration depends on its mass and on the net force acting on it.

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Mass A (2.0 kg) is moving with an initial velocity of 15 m/s in the +x-direction, and it collides with mass B (5.0 kg), initiall

mamaluj [8]

Answer:

$\Delta K=-160.89\ J$

Explanation:

It is given that,

Mass of object A, $m_A = 2\ kg$

Initial speed of object A, $u_A=15\ m/s$

Mass of object B, $m_B = 5\ kg$

Initial speed of object A, $u_B=0$ (at rest)

Le V is the final speed when they lock and move with one common velocity. Using the conservation of momentum to find it.

$m_Au_A+m_Bu_B=(m_A+m_B)V$

$m_Au_A=(m_A+m_B)V$

$V=\dfrac{m_Au_A}{(m_A+m_B)}$

$V=\dfrac{2\times 15}{(2+5)}$

V = 4.28 m/s

Initial kinetic energy of the system is :

$K_i=\dfrac{1}{2}m_Au_A^2$

$K_i=\dfrac{1}{2}\times 2\times (15)^2$

$K_i=225\ J$

Final kinetic energy of the system is :

$K_f=\dfrac{1}{2}(m_A+m_B)V^2$

$K_f=\dfrac{1}{2}\times (2+5)\times (4.28)^2$

$K_f=225\ J$

$K_f=64.11\ J$

Let $\Delta K$ is the change in kinetic energy of the system after the collision. It is given by :

$\Delta K=K_f-K_i$

$\Delta K=64.11-225$

$\Delta K=-160.89\ J$

So, the change in kinetic energy of the system is 160.89 Joules.

4 0

3 years ago

Can you see an apple in the dark?

abruzzese [7]

No. Because the color of the apple is red.

8 0

3 years ago

What would be the acceleration in a bus moving with uniform velocity and why

jeka57 [31]

Answer:

Then its acceleration is zero.

Explanation:

Velocity → Uniform → Constant

→ Change in Velocity = 0

A= $\frac{v-m}{e}$ = (v=m)

a=0

3 0

3 years ago

Hi!! Does anyone know this answer? :D

Agata [3.3K]

Answer:

c seems to be the only reasonable answer

8 0

3 years ago

Read 2 more answers

Which factors affect the strength of magnetic field around current carrying wire?

aleksley [76]

Explanation:

The expression for the magnetic field around the current carrying wire is given by :

$B=\dfrac{\mu_o I}{2\pi r}$

Here,

I is electric current and r is distance from the wire.

The factors affect the strength of magnetic field around current carrying wire are :

Electric current
Distance from wire

4 0

3 years ago