Slides in this set
A submarine is moving forwards at a constant
speed of 15ms-1 and is ascending at a steady rate
of 2ms-1. choose the option that correctly
compares the magnitudes of the forces:
A) Upthrust > weight ; thrust > drag
B) Upthrust > weight ; thrust = drag
C) Upthrust = weight ; thrust > drag
D) Upthrust = weight ; thrust = drag…read more
Newton's second law:
This states that the acceleration of an object is
proportional to the resultant force and
inversely proportional to its mass.
Resultant force = mass x acceleration
Acceleration and force are both vectors so must be
acting in the same direction.
This is a variation of Newton's first law.…read more
A motorcycle with a rider has a mass of
520kg and accelerates at 3.5ms-2.
a) If the drag is 430N, calculate the
forward driving force on the motorcycle.
b) A passenger of mass 70kg gets on the
motorcycle. What will the initial
acceleration be now…read more