Question
Answer
1(a)(i)
Mass is a measure of the quantity of matter in an object at rest relative to the
observer
1(a)(ii)
Weight is a gravitational force on an object that has mass
1(a)(iii)
The weight of two objects can be compared using a balance / a force meter
1(b)
C W = mass × g
1(c)
B mass
1(d)(i)
Newton (N)
1(d)(ii)
m/s2
1(d)(iii)
N/kg (equivalent to m/s2)
2(a)
2(b)(i)
2(b)(ii)
Gravitational field strength is defined as force per unit mass
Mass =
Weight 1850
= 9.8 = 190 kg (2s.f.)
g
Weight = 189 × 3.7 = 700 N (2s.f.)
3(a)
A region in space around a mass in which another mass experiences a force of
attraction.
3(b)
A gravitational field exerts a force on a mass in the field
3(c)
Gravitational field strength is defined as force per unit mass
3(d)
Weight = 200 × 8.8 = 1760 N