ip2.2.6 acceleration and mass © oxford university press 2011 acceleration and mass
TRANSCRIPT
IP2.2.6 Acceleration and mass
© Oxford University Press 2011
Acceleration and mass
IP2.2.6 Acceleration and mass
© Oxford University Press 2011
The mass of an object affects its acceleration for a given force.
Imagine kicking these two objects, which is likely to accelerate more?
If you kicked them with the same force the football would accelerate more than the concrete block. This is because the football is lighter.
IP2.2.6 Acceleration and mass
© Oxford University Press 2011
The resultant force acting on an object, its mass and its acceleration are related in this equation:
resultant force = mass acceleration
(newtons, N) (kilograms, kg) (metres per second2, m/s2)
If the resultant force is called F, the mass m and the acceleration a, then:
F = m a
IP2.2.6 Acceleration and mass
© Oxford University Press 2011
The acceleration of an object can be calculated:The space shuttle has a total mass of 1 875 000 kg and produces a resultant force of 24.9 million newtons.Rearrange the equation, resultant force = mass × acceleration, to: acceleration =
or a =
a =
a = 13.28 m/s2
mass
force resultant
m
F
kg 000 875 1
N 000 900 24