P10 - Force and Motion Flashcards
The greater the resultant force on the object, the greater the…
Acceleration.
The greater the mass of the object…
The smaller it’s acceleration.
Terminal velocity?
A constant velocity when the frictional force is equal and opposite the weight. Balanced forces.
The resulany force of an object moving at terminal velocity is…?
0!
Stopping distance is made up of…
The thinking distance and the braking distance.
Factors that increase braking distance?
Poor weather- less friction- and poor vehicle maintenance.
Factors that increase the thinking distance?
Slow reaction time drugs, alcohol, using phone.
Equation for braking force?
F=ma
Equation to work out acceleration?
A= v2-u2/2s
Thinking distance?
Speed*reaction time
Newtons second law?
The acceleration of an object is directly proportional to the resultant force on the object and inversely proportional to the mass of the object
D. Inertia?
The tenancy of an object to stay at rest or remain in motion - a measure of the difficulty of changing n objects velocity
E. Inertia?
force/acceleration
The longer the impact time…
The more the impact time is reduced
E. Force ( mass, velocity)
Mass x change in velocity / time taken
