A small ball with a mass of 0.7 kg and a velocity of 13 m/s hits another ball with the same mass. The first ball stops moving, and the of the third ball45.5 m/s 45.5 m/s 36 m/s 36 m/s 9.3 m/s 9.3 m/s 1.82 m/s
Based on the given information, we can find the velocity of the second ball by using the principle of conservation of momentum.
The momentum of an object is given by the product of its mass and velocity: momentum = mass × velocity.
The momentum of the first ball before the collision is 0.7 kg × 13 m/s = 9.1 kg·m/s.
Since the second ball has the same mass as the first ball, its momentum before the collision is also 9.1 kg·m/s.
The total momentum after the collision is the sum of the momenta of the two balls.
Since the first ball stops moving after the collision, its momentum becomes zero.
So, the momentum of the third ball after the collision is 9.1 kg·m/s.
We can find the velocity of the third ball by rearranging the momentum formula:
momentum = mass × velocity
9.1 kg·m/s = 0.7 kg × velocity
Solving for velocity, we find:
velocity = 9.1 kg·m/s / 0.7 kg
velocity ≈ 13 m/s
Therefore, the velocity of the third ball is approximately 13 m/s.