Physical Science Wilson Exam1

If you toss a ball straight upward at 40 m/s with no air resistance, 6 seconds later its speed is _________. A) 20 m/s. B) 40 m/s. C) 10 m/s. D) 30 m/s. E) zero.

A) 20 m/s.

Science is a body of knowledge that extends back to _______. A) humankind's beginnings. B) the time of Galileo. C) Italy in the 16th century. D) Greece in the 7th century B.C.

A) humankind's beginnings.

Science is concerned mainly with the _________. A) natural world. B) difference between right and wrong. C) spiritual world D) search for eternal truths.

A) natural world.

A 10-N block and a 1-N block lie on a horizontal frictionless table. To push them with equal acceleration, we would have to push with_________. A) one-tenth as much force on the heavier block. B) 10 times as much force on the heavier block. C) equal forces on each block. D) 10 squared or 100 times as much force on the heavier block. E) none of the above

B) 10 times as much force on the heavier block

Success in science is mainly linked to emphasis on _____. A) philosophical discussions. B) experiments. C) trial and error. D) luck.

B) experiments

When a scientist is dishonest and reports false information he or she________. A) after an apology, will be excused by the scientific community. B) gets no second chance in the scientific community. C) will usually be excused by the scientific community. D) will likely be burned at the stake.

B) gets no second chance in the scientific community.

In science, an educated guess is a _______. A) theory. B) hypothesis. C) both

B) hypothesis

If you toss a ball straight upward at 40 m/s with no air resistance, one second before it reaches the top of its path its speed is__________. A) 40 m/s B) zero C) 30 m/s D) 20 m/s E) 10 m/s

B) zero.

If a Jaguar sports car accelerates from zero to 100 km/h in 3.0 s its acceleration is _________. A) 0.06 km/h/s. B) 0.03 km/h/s. C) 33.3 km/h/s. D) 66 km/h/s.

C) 33.3 km/h/s.

In science, a theory is _________. A) less than a fact. B) an educated guess. C) a synthesis of a large body of well-tested knowledge. D) unchangeable.

C) a synthesis of a large body of well-tested knowledge.

Science, art, and religion need not contradict one another because __________. A) choosing the correct one allows you can forget the other two. B) choosing science means that you can forget about religion and art. C) all three operate in different domains. D) choosing religion and art allows you to dismiss science.

C) all three operate in different domains.

In contrast to Aristotle's way of explaining nature, Galileo relied on _______. A) mathematics. B) logic. C) experiment. D) patterns.

C) experiment.

Science greatly advanced when Galileo favored_____. A) philosophical discussions. B) non-mathemaical thinking. C) experiment. D) none of the above

C) experiment.

The air resistance of falling is greatly affected by an object's frontal area and ________. A) weight B) mass C) speed

C) speed.

An object in motion tends to remain in motion_____. A) due to their nature. B) only when an external force acts on it. C) without the need of a force. D) because of a force inside the object.

C) without the need of a force.

A girl pushes a cart to the left with a 100-N force. A boy pushes it to the right with a 50-N force. The net force exerted on the cart is_____. A) 50 N to the right. B) 100 N to the right. C) 100 N to the left. D) 50 N to the left.

D) 50 N to the left.

Which has zero acceleration? A) an object in mechanical equilibrium B) an object moving at constant velocity C) an object at rest D) all of the above E) none of the above

D) all of the above

A player catches a ball. Consider the action force to the ball against the player's glove. The reaction is the______. A) player's grip on the glove. B) muscular effort in the player's arms. C) friction of the ground against the player's shoes. D) force of the glove on the ball. E) none of the above

D) force of the glove on the ball.

If you are learning to juggle it would be good to slow the ball's acceleration. You can do this by using_____. A) heavier balls. B) lighter balls. C) more balls. D) none of the above

D) none of the above

Which of the following involves passion, talent, and intelligence? A) literature B) science C) art D) music E) all of the above

E) all of the above