Two factors effecting the magnitude of the force of gravity between 2 objects are...
  • Mass and Distance 
  • Mass and Matter
  • Distance and Weight 
  • Weight and Mass
The force of gravity acting on an object is the object's ______.
  • Mass
  • Matter
  • Weight 
  • Terminal velocity 
You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.
  • 20N 
  • 40N 
  • 10N 
  • 70N
What is the force acting between any two objects in the known universe all the time?
  • Gravitational Force 
  • Force of Friction 
  • Normal Force 
  • Electromagnetic Force 
To calculate net force, when forces are acting in the same direction, the forces are ...
  • added 
  • subtracted 
  • mutiplied 
  • divided 
With unbalanced forces, the object will move in the direction of the _______ force.
  • larger 
  • smaller 
  • equal 
What type of fluid friction acts on an object moving through the air?
  • Friction 
  • Normal Force 
  • Gravity 
  • Air resistance 
To calculate net force, when forces are acting in opposite directions, the forces are ...
  • added 
  • subtracted 
  • multiplied 
  • divided 
Imagine you travel to another planets. What will change as you walk around the surface of the planet- your mass or your weight?
  • Mass
  • Weight 
  • Both 
  • Neither 
Friction is a force that acts in a(n) ___________ direction relative to a moving object.
  • similar
  • opposite
  • parallel
  • perpendicular
 What is the unit that measures force?
  • Weight
  • Net force
  • Newton
  • Kilogram
How would the absence of friction affect a marble traveling on a long, straight path?
  • The marble’s speed would decrease.
  • The marble’s speed would increase.
  • The marble would stop immediately. 
  • The marble would remain at a constant speed.
As the distance between 2 objects increases, what happens to gravitational force?
sc-8 sb-7-Forces, Friction, and Gravityimg_no 255.jpg
  • It increases.
  • It decreases.
  • It stays the same.
  • Only Mr. Silvio knows what will happen.
As mass increases, what happens to the gravitational force?
sc-8 sb-7-Forces, Friction, and Gravityimg_no 256.jpg
  • It increases.
  • It decreases.
  • It stays the same.
  • It acts as a 3rd degree derivative function.
Which of the following will not change in different gravitational fields?
sc-8 sb-7-Forces, Friction, and Gravityimg_no 257.jpg
  • weight
  • force
  • mass
  • pounds
When does a falling object experienced balanced forces?
  • When it reaches terminal velocity
  • During free fall
  • When it first starts to fall
  • When it bounces up after hitting the ground
What is the rate at which Earth's gravity accelerates objects in free fall?
  • 9.8 m/s2
  • 3.14159 km/hr/s
  • 13.7 m/s2
  • 42 km/h/s
The main reason a baseball comes down when a boy tosses it up into the air is —
  • magnetism is pulling the ball down
  • the boy cannot see to catch it
  • gravity is pulling down on the ball
  • gravity pushes the ball in the air
What is friction?
sc-8 sb-7-Forces, Friction, and Gravityimg_no 258.jpg
  • It is a resistance force
  • Friction  does not exist
  • It is an imaginary force
  • It is red
How do you lower the friction force?
sc-8 sb-7-Forces, Friction, and Gravityimg_no 259.jpg
  • By a smooth surface
  • By a rough surface
  • By not pushing hard
  • By pushing down
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