1 year ago

A body of mass 80kg moving with a velocity of 6m/s hits a stationary body

Physics

1 answer:

Sauron [17]1 year ago

8 0

Answer:

4 m/s

Explanation:

Conservation of momentum , mv

Before collision 80 kg * 6 m/s = 480 kg-m/s

after the collision,

the momentum is the same but the mass is 80+40 kg =120 kg

mv = 480

120 * v = 480

v = 4 m/s

You might be interested in

A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. It takes 2.5 s

blondinia [14]

Answer:

1.2 m/s

0.31 m

0.15 m

Explanation:

Time period is

$T=2.5\times 2\\\Rightarrow T=5\ s$

Frequency is

$f=\dfrac{1}{T}\\\Rightarrow f=\dfrac{1}{5}\\\Rightarrow f=0.2\ Hz$

Velocity is given by

$v=f\lambda\\\Rightarrow v=0.2\times 6\\\Rightarrow v=1.2\ m/s$

The waves are traveling at 1.2 m/s

Amplitude is given by

$A=\dfrac{d}{2}\\\Rightarrow A=\dfrac{0.62}{2}\\\Rightarrow A=0.31\ m$

Amplitude is 0.31 m

If d = 0.3 m

$A=\dfrac{0.3}{2}=0.15\ m$

The amplitude would be 0.15 m. The speed would remain the same.

8 0

3 years ago

A 0.150 kg mass is attached to a spring with k = 18.9 N/m. At the equilibrium position, it moves 2.39 m/s. How much mechanical e

Nastasia [14]

Answer:0.428

Explanation: got it right on Acellus

5 0

2 years ago

What is the equivalet tempreture of 0 kelvin in celcius scale <br> HELP NEED IT IN 5 MIN

Alona [7]

Answer:

-273.15 degree celcius

Explanation:

7 0

3 years ago

What happened to the maximum height of consecutive swings

GarryVolchara [31]

Answer:

we need more info

Explanation:

3 0

3 years ago

How does brainy work

balandron [24]

You have to get points to asked a question and then you can help people to get points and it you want to have friends send them inventions but it you don't have no points you can't asked quenstions

8 0

3 years ago

Read 2 more answers