Netwon's Laws
In what century did Sir Isaac Newton discover the laws of motion?
1600s/1700s
When the net force acting on an object is 0N, we call this ____________________.
What are balanced forces or equilibrium?
A penguin sliding a snowy hill is exhibiting _____ friction.
What is kinetic?
Attractive force existing between all objects with mass.
What is gravity?
An object will not change its motion unless another _____ acts on it.
What is a force (unbalanced force)?
If a force of 100N is applied to push a box and friction acts opposite to the pushing force at 33N what is the magnitude of the net force? Balanced or unbalanced?
What is 67N? Unbalanced.
In which direction does friction act when a car is driving on the road?
Opposite of the direction the car is travelling.
When a plane flies through the air, the forward force of the jet engine is called _______.
What is thrust?
What is the definition of force?
What is a Push or a pull?
A force going to the right at 300 N, an opposite force going to the left at 500N, the net force, and direction are______.
What is 200N to the left?
Measure of the force of gravity on an object.
What is weight?
Neglecting air resistance, if an elephant and a mouse were dropped from the roof of the school, who would hit the ground first?
Both would hit at the same time.
A hot air balloon experiences a 500 N force downward and a 250 N force to the left. What is the net force?
559 N, 63 degrees (or 27 degrees)
Air resistance is caused by ____________ between the object and air molecules hitting it.
What is friction?
When gravity pulls down on an object, this force is the surface pushing back upward.
What is the normal force?
SELECT all statements that are true.
The greater the total masses of objects,
A.the easier the object starts moving.
B.the greater the inertia.
C.the more balanced it is.
What is B?