AQA Physics Combined Science Unit 5: Forces Higher
Explain the difference between a vector and a scalar quantity.
Place a tick in the correct column to show whether the following
are vector or scalar quantities.
a
1
Quantity Vector Scalar
Force
Speed
Distance
Velocity
Displacement
Forces can be contact or non-contact. Provide two examples for
each one.
Contact:
Non-contact:
b
Explain the difference between mass and weight.
Mass:
Weight:
Unit of mass:
Unit of weight:
Name the apparatus used to determine an objects weight.
c
State the equation that can be used to determine the weight of
an object.
Calculate the weight of an object on the moon if its mass is 3kg.
The gravitational field strength on the moon is 1.6N/kg.
Explain the effect on an object’s weight if its mass was doubled.
d
Calculate the resultant forces acting on the van below.
Horizontal force:
Vertical force:
On a force diagram, what two things do the arrows show?
e
Complete the sentences below.
Elastic deformation occurs when a force has been applied to a
spring and it to its original shape.
occurs when the spring does not return to its
original shape.
f
Students placed masses, one at a time, on a spring and measured
its extension. They collected the following results.
Plot a force/extension graph for the data shown above. Remember
to include a line of best fit.
Mark the limit of proportionality on your graph.
State the equation that links force, spring constant and extension.
g
Force (N) 012345
Length of
Spring (cm) 3 5 7 9 11 17
Extension (cm) 0 2 4 6 8 14
