Science reason english 3 pot

32. Which theory would correctly predict the path of a projectile such as an arrow?

f. The impetus theory says the impetus runs out gradually at a decreasing rate. This would explain

why the projectile follows a parabolic path.

g. The inertia theory says the inertia runs out gradually at a decreasing rate. This would explain why

the projectile follows a parabolic path.

h. The impetus theory says the force of gravity is acting on the projectile causing its motion to change

and creating the parabolic path.

j. The inertia theory says the force of gravity is acting on the projectile causing its motion to change

and creating the parabolic path.

33. Which of the following statements are true?

I. In the inertia theory, the net force acting on the arrow to cause it to slow down and fall to the

earth is the force of the bow on the arrow.

II. In the impetus theory, the arrow gains an infinite amount of impetus and will never slow down

and fall to the ground.

III. In the inertia theory, the net force acting on the arrow to cause it to slow down and fall to the

earth is the force of gravity on the arrow.

IV. In the impetus theory, the impetus imparted to the arrow by the bow is used up and that is why

the arrow falls to the ground.

a. I and II

b. II and III

c. III and IV

d. III only

34. According to the impetus theory, for an object to continue moving in a straight line at constant veloc￾ity what conditions must be true?

f. According to the impetus theory, the object must be given infinite impetus.

g. According to the impetus theory, the object must have no net force on it.

h. According to the impetus theory, the object must be given infinite impetus.

j. According to the impetus theory, the object must have gravity providing the impetus.

35. According to the inertia theory, for an object to continue moving in a straight line at constant velocity,

what conditions must be true?

a. According to the inertia theory, the object must be given infinite inertia.

b. According to the inertia theory, the object must have an infinite net force on it.

c. According to the inertia theory, the object must have gravity as the net force acting on it.

d. According to the inertia theory, the object must have no net force acting on it.

–ACT SCIENCE REASONING TEST PRACTICE–

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