The following T/F statements refer to The Web of Belief, Chapter X 10. One basic purpose of language is that of getting others to do what we want them to do
11. The proper business of argument is to convince another of one’s belief.
12. Our credibility may backfire insofar as we, as well as others, may neglect to examine the evidence we have for our beliefs.
13. In "overwhelming" our opponent, we attack his reasons for doubting a premise for our belief.
14. Our failure to undermine our opponent’s objection may result in our giving up our own belief.
15. The desire to have been right is a highly recommended, basic principle of critical thinking.

Scissors and a seesaw both cut things that’s the only comparison

    m₁v₁ + m₂v₂ = (m₁ + m₂)vmomentum is conserved.the left-hand side of the equation represents the momentum in the system before the collision.the right-hand side represents the momentum in the system after the collisionm₁ and v₁ represents the mass and the velocity of the physics blockm₂ and v₂ represents the mass and velocity of the ball of puttyv represents the final velocity of the combined mass.the question states the two masses stick together. they combined mass has its own velocity with the body mass the sum of the two objects' massestheir combined momentum is (m₁ + m₂)vto find the magitude of (m₁ + m₂)v, we need to add the vectors on the left-hand side of the equation: m₁v₁ + m₂v₂.note the diagram. i have positioned the vectors in accordance with their directions.the magnitude of the resultant can be calculated using the pythagorean theorem since this is a right triangle situation (north and west are perpendicular)|(m₁ + m₂)v| =  √[ (m₁v₁)² + (m₂v₂)² ]|(m₁ + m₂)v| =  √[ (1.5kg·8.0m/s)² + (0.40kg·20m/s)² ]|(m₁ + m₂)v| =  14.4 kg m/sfor two significant figures (assuming that 20m/s is two), this rounds to 14 kg m/s