Ch 4: Forces and Newton's Laws of Motion

Question 1

A force acts on an object. Forces do not exist in _________ from the object that experiences them.

Answer 1

isolation

p. 107

Question 2

A constant force produces a constant ____________.

Answer 2

acceleration

p. 107

Question 3

A long-range force is a force that acts on an object without _______ ______.

Answer 3

physical contact

p. 107

Question 4

In all cases, the force exerted on an object that is pressing against a surface is in a direction _____________ to the surface.

Answer 4

perpendicular

p. 111

Question 5

The force of friction is always ________ to the surface.

Answer 5

parallel

p. 111

Question 6

Friction at a surface is one example of a resistive force, a force that opposes or resists motion. Resistive forces are also experienced by objects moving through ______. This kind of resistive force is called ____. Like kinetic friction, ____ points opposite the direction of motion.

Answer 6

fluids
drag
drag

p. 112

Question 7

The F(net) is a vector that points in the ____ _________ as the acceleration vector.

Answer 7

same direction