Motion Flashcards
Average Cycling Speed
6 m/s
Average Plane Speed
900 km/h
Average Running Speed
3.0 m/s
Average Train Speed
100 km/h
Average Walking Speed
1.5 m/s
Conservation of Momentum
in a closed system, the total momentum before an event is equal to the total momentum after the event
Crumple Zone
part of a car that increases the impact time reducing the impact force
Displacement
includes both the distance an object moves, measured in a straight line form the start point to the finish line, and the direction of that straight line, a vector quality
Distance
a scalar quantity that describes how far an object moves
Earth’s Gravitational Field Strength
9.8 N/kg
Inertia
a tendency of an object to remain unchanged or continue in an existing state
Newton’s First Law
states that if forces are balanced on an object, it either does nothing or continues to do what it’s doing
Newton’s Second Law
states that if you increase forces, something goes faster
Newton’s Third Law
states that all forces have an equal and opposite force
Reaction Time
0.2-0.9 seconds
Speed
how fast something is going
Tachograph
device in a long-distance vehicle that monitors driving time, speed and distance
Terminal Velocity
acceleration by a falling object acted on only by gravity
Van de Graaf
generator that uses an electric belt to accumulate charge
Velocity
speed and direction
