Force, motion and gravitation Flashcards
1
Q
What is the mass of an object?
A
a measure of the capacity of that object to remain motionless or move with constant velocity when the sum of forces acting on it equals zero
2
Q
What is weight?
A
A force and a vector which is proportional to mass
3
Q
What is the equation for weight (W) and the units?
A
Weight = mass x gravitational force
Units are newtons (N) or pounds (lbs)
4
Q
What is the unit of mass?
A
kg
5
Q
What does the law of gravitation state?
A
there is a force of attraction between any two bodies of mass, m1 and m2.
6
Q
What is the equation for uniformly accelerated motion?
A
ΣF = m x a
7
Q
SUVAT equations
A
v = u + at s = ut + 1/2 (at²) s = 1/2(u+v)t v² = u² + 2as s = vt - 1/2(at²)
