Answer:
[tex] 1.3310\times 10^8 m/s[/tex] is the rock's speed.
Explanation:
Momentum is defined as motion possessed by the moving body's mass. Mathematically it a product of mas and velocity of the body.
[tex]Momentum(P)=Mass(m)\times velocity(v)[/tex]
Given : Mass of rock = m = 1.45 kg
Velocity of the rock = v
Momentum of the rock = P =[tex]1.93\times 10^8 kg m/s[/tex]
[tex]1.93\times 10^8 kg m/s=1.45 kg\times v[/tex]
[tex]v=\frac{1.93\times 10^8 kg m/s}{1.45 kg}=1.33\times 10^8 m/s[/tex]
[tex] 1.3310\times 10^8 m/s[/tex] is the rock's speed.
