Newtons First And Second Laws Flashcards
1
Q
What is needed to make an object move?
A
A resultant force on the object
2
Q
If the resultant force on an object is zero what will happen to the object?
A
It will move at the same velocity
3
Q
Is resultant force and acceleration directly or inversely proportional?
A
Directly
4
Q
Is acceleration inversely or directly proportional to mass?
A
Inversely
5
Q
What is newtons second law?
A
F=ma
6
Q
Why are large decelerations dangerous?
A
They require a large force
7
Q
How can crash force be lowered?
A
By increasing the time the object is slowed
8
Q
What do crumple zones do?
A
Crumple easily so the vehicle takes longer to stop
9
Q
What energy transfer occurs in the brakes?
A
Kinetic energy to thermal
