+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
If your automobile runs out of fuel while you are driving the engine stops but you do not come to an abrupt stop. This concept that most explains why is
|
INERTIA
|
|
Whirl a rock at the end of a string on an ice-covered pond and it follows a circular path. If the string breaks, the tendency of the rock is to
|
FOLLOW A STRAIGHT-LINE PATH
|
|
A heavy object and a light object are dropped at the same time from rest in a vacuum. The heavier object reaches the ground
|
AT THE SAME TIME AS THE LIGHTER OBJECT
|
|
A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is jerked quickly.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
|
THE MILK CARTON HAS INERTIA
|
|
The newton is a unit of
|
FORCE
|
|
An object is pulled northward by a force of 10N and at the same time another force of 5N pulls it southward. The magnitude of the resultant (net) force on the object is
|
5 N
|
|
The two measurements necessary for calculating average speed are:
|
DISTANCE AND TIME
|
|
A ball is thrown upwards and returns to the same position (neglecting air resistance). Compared with its original speed after release, its speed when it returns is about
|
THE SAME
|
|
The gain in speed each second for a freely-falling object is about
|
10 M/S
|
|
When a rock thrown straight upward gets to the exact top of its path, its
|
VELOCITY IS ZERO AND ITS ACCELERATION IS ABOUT 10 METERS PER SECOND DOWN
|
|
Acceleration is defined as the change in
|
VELOCITY DIVIDED BY THE TIME INTERVAL
|
|
Suppose you are in a car that is going around a curve. The speedometer reads a constant 30 kilometers per hour. These are true:
|
YOU AND THE CAR ARE ACCELERATING-YOUR SPEED IS CONSTANT
|
|
Your weight is:
|
THE GRAVITATIONAL ATTRACTION FORCE BETWEEN YOU AND THE EARTH
|
|
An object is propelled along a straight-line path in space by a force. If the mass of the object somehow becomes twice as much, its acceleration:
|
HALVES
|
|
A coconut and a feather fall from a tree through the air to the ground below. The amount of air-resistance force is:
|
GREATER ON THE COCONUT
|
