Vertical Motion Under Gravity Flashcards
1
Q
If an object is in ‘free fall’ what is the only force acting on it?
A
Gravity
2
Q
What must be true for an object to be in free fall?
A
There must be no air resistance
3
Q
What is true about an object in free falls acceleration?
A
Objects in free fall accelerate downwards at the same rate.
4
Q
Without air resistance does the mass of objects really affect who fast they go?
A
NO! Acceleration does not depend on the mass of the object without air resistance.
5
Q
How do we treat acceleration due to gravity?
A
As a CONSTANT
6
Q
What is the value of gravity?
A
9.81 m s*-2
7
Q
How does the value of gravity change?
A
The value of gravity decreases as you move further away from the Earths surface.
8
Q
What is gravity also known as?
A
Gravitational field Strength (N kg*-1)
