Exam #1 ---- (motion, inertia, force, acceleration, etc.)
1. A book is at rest on top of a table. Which of the following is correct?
A. There is no force acting on the book.
B. The book has no inertia.
C. There is no force acting on the table.
D. The book is in equilibrium.
E. The inertia of the book is equal to the inertia of the table.
2. The property of a moving object to continue moving is what Galileo called
A. velocity.
B. speed.
C. acceleration.
D. inertia.
E. direction.
3. According to Newton's First Law of Motion,
A. an object in motion eventually comes to a halt.
B. an object at rest eventually begins to move.
C. an object in motion moves in a parabolic trajectory unless acted upon by a net force.
D. an object at rest always remains at rest.
E. an object at rest remains at rest unless acted upon by a net force.
4. If an object is moving, then the magnitude of its ____ cannot be zero.
A. speed
B. velocity
C. acceleration
D. A and B
E. A, B, and C
5. A car initially at rest accelerates in a straight line at 3 m/s². What will be its speed after
2 seconds?
A. 0 m/s
B. 5 m/s
C. 3 m/s
D. 6 m/s
E. 2 m/s
6. A body in free fall in a vacuum
A. will drop the same distance during each second of its fall.
B. will have the same average speed during each second of its fall.
C. will have a constant velocity during each second of its fall.
