Exam 2: Newtons First Law of Motion: Inertia

A truck is moving at 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

A package falls off a truck that is moving at 30 m/s.Neglecting air resistance,the horizontal speed of the package just before it hits the ground is

Whirl a rock at the end of a string and it follows a circular path.If the string breaks,the tendency of the rock is to

A man weighing 800 N stands at rest on two bathroom scales so that his weight is distributed evenly over both scales.The reading on each scale is

When a rocket ship accelerating in outer space runs out of fuel,it

Whereas Aristotle relied on logic in explaining nature,Galileo relied on

A 300-kg bear grasping a vertical tree slides down at constant velocity.The friction force between the tree and the bear is

Galileo's use of inclined planes allowed him to effectively

An object in mechanical equilibrium is an object

If your automobile runs out of fuel while you are driving,the engine stops but you do not come to an abrupt stop.The concept that most explains why is

A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is jerked quickly.This best demonstrates that

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

Galileo's interpretation of motion differed from Aristotle's in that Galileo emphasized

The force of friction on a sliding object is 10 N.The applied force needed to maintain a constant velocity is

If no external forces are acting on a moving object,it will

According to Newton's law of inertia,a railroad train in motion should continue going forever even if its engine is turned off.We never observe this because railroad trains

Hang from a pair of gym rings and the upward support forces of the rings will always

The scientist to first introduce the concept of inertia was