Answer:


Explanation:
The collision is elastic so we can use the conservation of momentum


Describe the motion in axis x'



Describe the motion in axis y'


Here is your answer
We know that
Velocity = Wavelength/Time period
Here,
Wavelength = 200m
Time period= 20 secs
So,
Velocity= 200/20 m/s
v= 10m/s
HOPE IT IS USEFUL
Answer:
The small pebble
Explanation:
Since the potential energy, P.E lost equals kinetic energy, K.E gained,
P.E = K.E
P.E = mgh = K.E
So, K.E = mgh where g = acceleration due to gravity and h = height of drop
Since h and g are constant
K.E ∝ m
So, the kinetic energy of the object is directly proportional to its mass. Thus, the object with the smaller mass has the lesser kinetic energy.
Since the object with the smaller mass is the small pebble, so the small pebble would have less kinetic energy as it crashes on the road at the bottom of the mountain.
This is a uniform rectilinear motion (MRU) exercise.
To start solving this exercise, we obtain the following data:
<h3><u>DATA:</u></h3>
- V = 3.8 m/s
- D = ¿?
- T = 15 sec
To calculate the distance, multiply the speed by the time.
We apply the following formula: d = v * t
We clear our data in the formula:


The baseball in 15 seconds will roll a distance of 57 meters.
<h2>{ Pisces04 }</h2>
Answer: I don't know sorry.
Explanation: