### Consider an object in freefall. Each second the object falls, what happens to the distance?

It falls with a greater distance than in the second before.

### Whirl a rock at the end of a string and it follows a circular path. If the string broke, what path would it take?

a straight line path

### Galileo found that a ball rolling down one inclined plane rolls how far up another incline plane?

To nearly the same height as it initially started.

### A 20N force and a 15N force act on an object in opposite directions. What is the net force on the object?

5 N

### If a 150 lbs person stands on a pair of bathroom scales, and leans so one of the scales reads 100 lbs, the the other scale

reads 50 lbs

### If you push a crate across the floor with the force of 100N and it slides at a constant velocity, then the force of friction between the crate and the floor is

equal to 100N

### Your backpack falls from your seat onto the floor of a bus that is moving at a constant speed of 20 km/h. During the fall, its horizontal speed, relative to the road is

20 km/h

### A sheet of paper can be withdrawn from under a container of milk without toppling if the paper is jerked quickly. This best demonstrated that the milk carton has

inertia

### A hockey puck is set in motion across a frozen pond. If ice friction and air resistance are neglected, the force required to keep the puck sliding in motion at a constant velocity is

0N

### A truck is moving at a constant velocity, inside the storage compartment, a rock is dropped from the midpoint of the ceiling and strikes the floor below. The rock hits the floor..

exactly below the midpoint of the ceiling

### A 10N falling object encounters 4N of air resistance. The magnitude of the net force on the object is

6N

### When you stand at rest on a pair of bathroom scales, the readings on the scales will always add to...

equal your weight