core practical one Flashcards
1
Q
what is meant by free fall
A
An object is said to be in free fall when the only force acting upon it is its own weight under gravity
2
Q
why can suvat equations be used
A
suvat equations can be used because the object will fall with uniform acceleration
3
Q
why is advantageous to use a smaller ball
A
the effect of air resistance is less
4
Q
suggest why your value of G may not be the same as the accepted value
A
delays in timing equipment, resistive forces acting, errors in height measurements
5
Q
why is it better to use light gates
A
lower uncertainty, human reaction time not used
6
Q
would you be more likely to have a value higher or lower than the accepted value
A
lower because air resistance reduces the downwards resultant force on the object
