Title: investigations
Course: Physics copy 1

Q: Investigation 1: Investigate the relationship between the mass of the object and the normal force using the horizontal forces applet shown below. Use your results to answer the questions below.

[Image: a description of the operation of investigation 1]

When the mass of the object doubles the normal force [...].

[Image: four types of relationship]

The graph most closely matching this relationship is graph[...].

In words, the mass of an object [...] with the normal force when the object is on a horizontal surface.
A: doubles; 1; varies directly
Gap 1 offers: increases 4X; doubles; halves
Gap 2 offers: 2; 1; 3; 4; none of these
Gap 3 offers: varies inversely; varies directly; varies with the square; varies partially

Q: Investigation 2:Investigate the relationship between the coefficient of static friction and the minimum force required to move the object.

[Image: investigation 2]

When the coefficient of static friction doubles, the maximum force that can be applied without motion [...].

[Image: graphs of four relationship types]

The graph most closely modeling this relationship is [...].

In words, the minimum force required to move an object[...] with the coefficient of static friction.
A: doubles; 1; varies directly
Gap 1 offers: increases 4X; doubles; halves; none of these
Gap 2 offers: 2; 1; 3; 4; none of these
Gap 3 offers: varies inversely; varies directly; varies with the square; varies partially

Q: Investigation 3: Investigate the relationship between the applied force and the acceleration of the object.

[Image: applied force investigation set up]

Under the influence of kinetic friction, when the applied force on the object doubles, the acceleration of the object [...].

[Image: four relationship types]

The graph most closely resembling the relationship is [...].

In words, the acceleration of an object [...] with the coefficient of static friction.
A: none of these; 4; varies partially
Gap 1 offers: increases 4X; doubles; halves; none of these
Gap 2 offers: 2; 1; 3; 4; none of these
Gap 3 offers: varies inversely; varies directly; varies with the square; varies partially