If I fling a rock into space, beyond the gravity of the earth, it will stop...
when it hits something to provide a force
Which is greater, static or kinetic friction
static
If no external forces are acting on a moving object, it will
continue moving at the same velocity.
If Joe has a mass of 100 kg, and Betty has a mass of 50 kg, who has more Inertia?
Joe
Who dropped balls down the tower of Pisa and down waxed bowls?
Galileo
What are the magnitudes of the minimum and maximum resultants of a 4N and a 6 N force?
2N and . 10 N
Who was born last, Galileo or Newton.
Newton
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
about 30 m/s
The force of friction on a sliding object is 10 N. The applied force needed to maintain a constant velocity is
10 N
If I am a projectile, then I am only under the influence of this force...
Gravitational
A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is jerked quickly.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.
If a feather and a rock were rolling down the hill, which has more inertia?
rock
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
follow a straight-line path.
When the Net force = 0 , the situation is called this
equilibrum
An object in mechanical equilibrium is an object
that can be at rest or moving at a constant speed
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
always have forces that oppose their motion.
The name of a force that opposes motion is
Friction
The Force pulling me down an inclined plane is simply its FULL weight. (true or false)
false...it's the component of weight parallel to the plane.
If I want snow off my boots, I should do what?
stomp them on the ground
Does it take more force to start an object or keep it going due to friction?
Start it (static friction > kinetic friction)
When a rocket ship accelerating in outer space runs out of fuel, it
no longer accelerates.
Who made the three laws of motion?
Newton
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
Inertia
If I push on a book up that is at rest in my hand, then the book...
pushes down with the same force
The name of a "pulling force" due to a wire, rope or string, etc... is called...
Tension
Your inertia can be measured relative to another person by looking at their
mass
The scientist to first introduce the concept of inertia by thinking about friction was
Galileo
When you are in equilibrium, you can be either at rest or
constant speed
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