chapter 1 RAT Flashcards
Science greatly advanced when Galileo favored
A. philosophical discussion over experiment.
B. experiment over philosophical discussion.
C. nonmathematical thinking.
D. none of these
B. experiment over philosophical thinking
According to Galileo, inertia is a
A. force like any other force.
B. special kind of force.
C. property of all matter.
D. concept opposite to force.
C. property of all matter
When a 10-kg block is simultaneously pushed eastward with a force of 20 N and westward with a force of 15 N, the combination of these forces on the block is
A. 35 N west.
B. 35 N east.
C. 5 N east
D. 5 N west.
C. 5 N east
Tension is actually a force that tends to
A. stretch something.
B. compress something.
C. break something.
D. balance something.
A. stretch something
The equilibrium rule applies to
A. objects or systems at rest.
B. objects or systems in uniform motion in a straight line.
C. both of these
D. neither of these
C. both of these
When you stand on two bathroom scales, one foot on each scale with weight evenly distributed, each scale will read
A. your weight.
B. half your weight.
C. zero.
D. more than half your weight, but less than your full weight.
B. half your weight
Your average speed in skateboarding to your friend’s house is 5 m/s. It is possible that your instantaneous speed at some point was
A. less than 5 m/s.
B. 5 m/s.
C. more than 5 m/s.
D. any of these
D. any of these
If an object moves with constant acceleration, its velocity must
A. be constant also.
B. change by the same amount each second.
C. change by varying amounts depending on its speed.
D. always decrease.
B. change by the same amount each second
If a falling object gains 10 m/s each second it falls, its acceleration is
A. 10 m/s.
B. 10 m/s per second.
C. both of these
D. neither of these
B. 10 m/s per second
A freely falling object has a speed of 30 m/s at one instant. Exactly 1 s later its speed will be
A. the same.
B. 35 m/s.
C. more than 35 m/s.
D. 60 m/s.
C. more than 35 m/s
