Question 1 (1 point} A rock dropped from high tower and falls freely.r under the influence of gravity. Which one of the following statement is true concerning the rock as it falls? / \"a . . . IL; A} It will gain an equal amount of momentum during each second. {j E} It will gain an equal amount of kinetic energy during each second. C. C} It will gain an equal amount of momentum for each meter through which it _ falls. {3; D} It will gain an equal amount of speed for each meter through which it falls. Question 2 (1 point) A projectile launched with 200 kg m/s of momentum and 1000 J kinetic energy. What is the mass of the projectile? O A) 5 kg O B) 10 kg O c) 20 kg O D) 40 kgQuestion 3 (1 point) Which one of the following is true concerning momentum? A) Momentum is a force. O B) Momentum is a scalar quantity. O C) The momentum of an object is always positive. O D) The SI unit of momentum is kg m/s.Question 4 {1 point} A car accelerated from rest. In doing so the car gains a certain amount of momentum and Earth gains: /_\\ I I \"~/ A} More momentum. .\\ '._.' Bi Less momentum. /_'\\ "WI C} The same amount of momentum, but opposite direction. '._:' D} Different answer depends on the interaction between the two. Question 7 (1 point) A cart with mass 200 g moving on a friction-less linear air track at an initial speed of 1.2 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision, the first cart continues in its original direction at 1.00 m/s. What is the mass of the second cart? O A) 18 8 O B) 36 8 O c) 100 g O D) 200 gQuestion 8 (1 point) A force, F, is applied to a 5.0 kg block of ice, initially at rest, on a smooth surface. What is the velocity of the block after 3.0 s? FIN 20 + 10 N t/ s O A) 5.6 m/s O B) 8.0 m/s O C) 26.6 m/s O D) 40.0 m/s