terminal velocity/ stopping distance Flashcards
What happens to the forces during initial acceleration?
Unbalanced
What happens to the forces as the object gains speed?
The drag force increases
When is there a zero resultant force?
When the drag is of the same magnitude as the weight
What is the term when an objects reaches a constant speed?
Terminal Velocity
What are parachutes designed for?
To enable terminal velocity at a low speed due to large surface area
How are streamlined cars designed?
Designed so that air rushes over the cars at top speed
Allows to travel faster before reaching maximum speed
(Drag will balance maximum thrust)
How does speed affect stopping distance?
increases thinking and braking distance
How does drugs/alcohol affect stopping distance?
- increases thinking distance
How does bad quality tyres affect stopping distance?
- increases braking distance
