2 — kinematics Flashcards
1
Q
Acceleration
A
Rate of change of velocity
2
Q
The velocity of the athlete is alw positive but his acceleration is sometimes negative. Explain this statement.
A
The athlete’s velocity is decreasing without reversing his direction.
3
Q
2 objects have the same size and shape but one is heavier than the other. They are dropped from rest in air. Compare and state the heavier object’s acceleration and velocity
A
Heavier object has the same initial acceleration but higher terminal velocity as the lighter object.
4
Q
Free fall
A
An object is in free fall when the only force acting on an object is its own weight
