Forces & Momentum quiz Flashcards
What is Newton’s first law?
An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force
Formula for force:
Mass x Acceleration
What is the law of the conservation of momentum?
Momentum is neither created nor destroyed but only changed through forces acting on an object
Formula for average acceleration:
(Final Velocity - Initial Velocity) / time
What is Newton’s first law also known as?
Law of Inertia
What is Newton’s third law?
For every action, there is an equal and opposite reaction
Is momentum a vector or scalor?
Vector
Formula for acceleration:
Force / Mass
What is an example of Newton’s third law?
Diver jumping on a jumping board and it pushing back
Formula for momentum:
Mass x Velocity
Is kinetic energy a vector or scalor?
Scalor
Formula for mass:
Force / Acceleration
T or F: Is some momentum transferred when an object collides with another?
True
Formula for speed:
Distance / time
How is momentum measured?
Kilograms x m/s
What is the formula for change in momentum?
Mv (final) - Mv (initial)
Formula for average acceleration
(Final velocity - Starting velocity) / time
What are contact forces?
Interactions between objects that touch
How to label average acceleration
M/s squared
How to label force
Newtons
What is inertia?
An object’s tendency to resist motion
What is an example of an inelastic collision?
A ping pong ball bouncing into a stationary ping pong ball and causing the stationary one to move
What forces are contact?
- Applied force
- Spring force
- Normal force
- Drag force
- Frictional force
What happens in an elastic collision?
Kinetic energy and momentum are conserved
What is the difference between a scalar and a vector?
A vector requires direction
What is an example of an elastic collision?
Two ping pong balls bouncing off eachother
What is Newton’s second law?
An object’s acceleration depends on the force and mass of an object
What happens in an inelastic collision?
Kinetic energy is not conserved, but momentum is conserved
What are non contact forces?
Forces that attract or repel, even from a distance
What forces are non contact?
- Magnetic force
- Gravitational force
- Electric force
How to label acceleration?
M/s squared
Is velocity a vector or scalor?
Vector
