Density of a material depends upon it's mass & volume.
You can calculate it by: Density = Mass / Volume
Hope this helps!
In position #1, at time t₁ = 0, the coordinates are (1.1 m, 3.4 m).
That is,
x₁ = 1.1 m, y₁ = 3.4 m.
In position #2, at time t₂ = 3.0 s, the coordinates are (5.3 m, -0.5 m).
That is,
x₂ = 5.3 m, y₂ = -0.5 m.
The x-component of the average velocity is
Vx = (x₂ - x₁)/(t₂ - t₁)
= (5.3 - 1.1 m)/(3 - 0 s)
= 1.4 m/s
Similarly, the y-component of the average velocity is
Vy = (-0.5 - 3.4)/3
= -1.3 m/s
Answer
The x and y components of the average velocity are 1.4 m/s and -1.3 m/s respectively.
To calculate the acceleration of the baseball, we use the expression F = ma where F is the force, m is the mass of the object and a is the acceleration. We calculate as follows:
F = ma
18000 = 0.15a
a = 120000 <span>m/s^2 ------> SECOND OPTION</span>
Tennis ball will move with 1/3 th velocity of plastic ball