PHY- 108
A rock is thrown upward at 50e with respect to the horizontal. As it rises, its vertical component of velocity
decreases
The two measurements necessary for calculating average speed are
distance and time
A player hits a ball with a bat. The action force is the impact of the bat against the ball. The reaction to this force is the
force of the ball against the bat
If a freely falling object were somehow equipped with an odometer to measure the distance it travels, then the amount of distance it travels each succeeding second would be
grater than the second before
Which has zero acceleration? An object
all of these
For the astronauts inside the orbiting space shuttle, there is no force of Earth's gravity acting on them. This statement is
always false
Compared with the mass of a certain object on Earth, the mass of the same object on the Moon is
the same
Which of the following has the largest momentum relative to the earth?
a dog running down the street
When you touch a cold piece of ice with your finger, energy flows
actually both ways
Hang from a pair of gym rings and the upward support forces of the rings will always
add up to equal your weight
Water pressure is greatest against the
bottom of a submerged object
A force is a vector quantity because it has both
magnitude and direction
A kilogram is a measure of an object's
mass
An object maintains its state of motion because it has
mass
What does an object have when moving that it doesn't have when at rest?
momentum
Newton discovered
that gravity is universal
If you push an object just as far while applying twice the force, you do
twice as much work
The force required to maintain an object at a constant velocity in free space is equal to
zero
earth satellites are typically more than 100 km high so as to be above the earth's
atmosphere