Forces Flashcards
Describe newtons third law?
Every action has a equal and opposite reaction.
Describe newtons first law?
Object continues in its motion unless acted upon by another force.
What is a scalar?
A force without a direction.
What is a vector?
A force with a direction.
What is weight?
The gravitational force acting upon a mass.
Define mass?
A measure of matter in an object.
Define gravitational field strength?
The gravitational force an object receives.
What is the equation for stopping distance?
Thinking distance + braking distance
Describe what happens in terms of forces when 2 objects collide?
All energy dissipates into different forms.
What equations do you need to use when calculating impact time?
Force = mass X acceleration
Speed = distance x time
Velocity = acceleration X time
Acceleration = final velocity - starting velocity ÷ time elapsed.
What is the equation for Pressure?
Constant / Volume
What is the equation for Acceleration?
Change in Velocity / Time taken for change
What are some factors that affect Braking Distance?
Faulty brakes, Mass of car, Tyre wear.
What are some factors affecting thinking distance?
Alcohol, use of drugs, Use of mobile phone.
