**ZEUS FORM: **You MUST __bubble in__ the following information on your Zeus form exactly, or your test will not be graded!!!"Course Sort Number:: **14583** "Test ID Form" ** AA **Test ID NO."

__ MULTIPLE CHOICE__. Choose the one alternative that best completes the statement or answers the question.

- The newton is a unit of
. B) mass. C) density. D) inertia.__: A) force__ - The synthesis of a large collection of information that contains well-tested and verified hypotheses about certain aspects of the world is known as a scientific A) fact. B) hypothesis. C) law or principle.
. E) none of these.__D) theory__ - The two measurements necessary for calculating average speed are A) acceleration and time. B) velocity and time.
D) distance and acceleration. E) velocity and distance.__C) distance and time.__ - Which has zero acceleration? An object A) in mechanical equilibrium. B) moving at constant velocity. C) at rest
__. D) all of these.__E) none of these. - Which of the following is not a vector quantity? A) velocity
C) acceleration D) None are vector quantities. E) All are vector quantities.__B) speed__ - When a falling object has reached its terminal velocity, its acceleration is A) constant.
. C) g.__B) zero__ - The force exerted on the tires of a car to directly accelerate it along a road is exerted by the A) engine. B) tires. C) air.
. E) none of these.__D) road__ - Ten seconds after starting from rest, a car is moving at 40 m/s. What is the car's acceleration in meters per second per second? A) 0.25; B) 2.8;
**C) 4.0**; D) 10; E) 40 - A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is jerked quickly. This best demonstrates that A) the milk carton has no acceleration.B) there is an action-reaction pair of forces.C) gravity tends to hold the milk carton secure.
.E) none of these.__D) the milk carton has inertia__ - A 10-kg brick and a 1-kg book are dropped in a vacuum. The force of gravity on the 10-kg brick is
. B) zero. C) the same as the force on the 1-kg book.__A) 10 times as much as the force on the 1-kg book__ - A 10-N falling object encounters 10 N of air resistance. The net force on the object is
. B) 4 N. C) 6 N. D) 10 N. E) none of these.__A) 0 N__ - A ball is thrown upwards. Neglecting air resistance, what initial upward speed does the ball need to remain in the air for a total time of 10 seconds?
B) about 60 m/s C) about 80 m/s D) about 100 m/s E) about 110 m/s__A) about 50 m/s__ - A ball tossed vertically upward rises, reaches its highest point, and then falls back to its starting point. During this time the acceleration of the ball is always A) opposite its velocity. B) directed upward. C) in the direction of motion.
**D) directed downward**. - A baseball player bats a ball with a force of 1000 N. The ball exerts a reaction force against the bat of A) less than 1000 N. B) more than 1000 N.
.__C) 1000 N__ - A force is a vector quantity because it has both
. B) mass and acceleration. C) action and reaction counterparts.__A) magnitude and direction__ - A force of 1 N accelerates a mass of 1 kg at the rate of 1 m/s2. The acceleration of a mass of 2 kg acted upon by a net force of 2 N is A) twice as much.
. C) half as much. D) none of these.__B) the same__ - A river 100 m wide flows due south. A boat that goes 1 m/s relative to the water is pointed due east as it crosses from the west bank. The boat crosses in A) 50 s. B) 200 s. C) 141 s.
.__D) 100 s__ - An object is pulled northward with a force of 10 N and southward with a force of 15 N. The magnitude of the net force on the object is A) 0 N.
. C) 10 N. D) 15 N. E) none of these.__B) 5 N__ - An object travels 8 meters in the first second of travel, 8 meters again during the second second of travel, and 8 meters again during the third second. Its acceleration in meters per second per second is
. B) 5. C) 8. D) 10. E) more than 10.__A) 0__ - Arnold Strongman and Suzie Small each pull very hard on opposite ends of a massless rope in a tug-of-war. The greater force on the rope is exerted by: A) Arnold, of course. B) Suzie, surprisingly.
.__C) both the same, interestingly enough__