PHY100 Practice Questions Chapter 6 fully solved graded A+ 2023

PHY100 Practice Questions Chapter 6B 1) Which of the following has the largest momentum relative to the Earth? A) a tightrope walker crossing Niagara Falls B) a pickup truck speeding along a highway C) a Mack truck parked in a parking lot D) the Science building on campus E) a dog running down the street B 2) The difference between impulse and impact force involves the A) distance the force acts. B) time the force acts. C) difference between acceleration and velocity. D) mass and its effect on resisting a change in momentum. B 3) It is correct to say that impulse is equal to A) momentum. B) the change in momentum. C) the force multiplied by the distance the force acts. D) all of these. E) none of these. B 4) The impulse-momentum relationship is a direct result of A) Newton's 1st law. B) Newton's 2nd law. C) Newton's 3rd law. C 5) The conservation of momentum is most closely related to A) Newton's 1st law. B) Newton's 2nd law. C) Newton's 3rd law. C 6) A rifle recoils from firing a bullet. The speed of the rifle's recoil is small because the A) force against the rifle is smaller than against the bullet. B) momentum is mainly concentrated in the bullet. C) rifle has much more mass than the bullet. D) momentum of the rifle is smaller. A 7) Suppose a gun were made of a strong but very light material. Suppose also that the bullet is more massive than the gun itself. For such a weapon A) the target would be safer than the shooter. B) recoil problems would be lessened. C) conservation of energy would not hold. D) conservation of momentum would not hold. E) both conservation of energy and momentum would not hold. C 8) Two objects, A and B, have the same size and shape, but A is twice as heavy as B. When they are dropped simultaneously from a tower, they reach the ground at the same time, but A has a greater A) speed. B) acceleration. C) momentum. D) all of these. E) none of these. C 9) A heavy truck and a small truck roll down a hill. Neglecting friction, at the bottom of the hill, the heavy truck will have greater A) speed. B) acceleration. C) momentum. D) all of these. E) none of these. C 10) In order to catch a ball, a baseball player extends the hand forward before impact with the ball and then lets it ride backward in the direction of the ball's motion upon impact. Doing this reduces the force of impact on the player's hand principally because the A) force of impact is reduced. B) relative velocity is less. C) time of impact is increased. D) time of impact is decreased. E) none of these.