Answer: 909 m/s
Explanation:
Given
Mass of the bullet, m1 = 0.05 kg
Mass of the wooden block, m2 = 5 kg
Final velocities of the block and bullet, v = 9 m/s
Initial velocity of the bullet v1 = ? m/s
From the question, we would notice that there is just an object (i.e the bullet) moving before the collision. Also, even after the collision between the bullet and wood, the bullet and the wood would move as one object. Thus, we would use the conservation of momentum to solve
m1v1 = (m1 + m2) v, on substituting, we have
0.05 * v1 = (0.05 + 5) * 9
0.05 * v1 = 5.05 * 9
0.05 * v1 = 45.45
v1 = 45.45 / 0.05
v1 = 909 m/s
Thus, the original velocity of the bullet was 909 m/s
What uhhhhhhhhhhhhhhhhhhhhh
Answer:
1.53m
Explanation:
Given parameters:
Mass of box = 3kg
Gravitational potential energy = 45J
Unknown
Height of the box = ?
Solution:
To solve this problem;
Gravitational potential energy = mgh
m is the mass
g is the acceleration due to gravity
h is the height
45 = 3 x 9.8 x h
h = 1.53m
Answer:
The energy of motion is called is kinetic energy.
In general s the wavelength of the vibration decreases, the frequency of the object increases and vice versa.
<h3>What is frequency?</h3>
This is the number of complete cycles per second made by a vibrating particle.
The frequency of a wave is calculated as follows;
where;
- f is the frequency of the wave
- v is the speed of the wave
- λ is the wave length
Generally, as the wavelength of the vibration decreases, the frequency of the object increases and vice versa.
Learn more about frequency here: brainly.com/question/25699025
