Science Chapter 3 Test Flashcards
What is the gravitational force exerted on an object called
Weight
Which of the following best describes why projectiles move in a curved path
They have horizontal velocity and vertical acceleration
Which of the following explains why astronauts seem weightless in orbit
The space shuttle is in free fall
Which of the following exerts the strongest gravitational force on you
The earth
Over which segments are the forces on car balanced
B and D
Which of the following is true about an object in free fall
It pulls on Earth, and Earth pulls on it
The acceleration of an object is in the same direction as which of the following
Net force
Which of the following is NOT a force
Momentum
For every action there is an opposite and equal reaction
Newton’s 3rd Law
The way in which objects exert forces on each other is described by
Newtons 3rd Law
This prevents surfaces in contact from sliding past each other
Static friction
The _______ of an object is different on other planets in the solar system
Weight
When an object moves in a circular path, the net force is called a
Centripetal force
The attractive force between two objects that depends on their masses and the distance between them is
Gravity
___________ relates the net force exerted on an object to its mass and acceleration
Newtons 2nd law of motion
