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WorksheetsPS Test 6 (7th) 21-22
Total questions: 15
Worksheet time: 10mins
An object is moving if
the distance to a reference point is changing
the distance to a reference point is not changing
none
A reference point should be
a moving object
a non-moving object
none
Explain what rate of change means
Speed is
the distance covered in a unit of time
the time covered in a unit of distance
none
Which of these are units of speed?
m/s , km/h, MPH
m , km, cm
none
timedistaηce
acceleration
speed
none
If we want to increase a car's speed from 30 m/s to 40 m/s
we must accelerate
we must not accelerate
none
timespeed
acceleration
speed
none
An object is accelerating when
its speed is changing in a unit of time
its speed is not changing in a unit of time
none
Acceleration can be
positive or negative
big or small
none
A force is a
piece of solid matter
push or pull upon any object
none
Chris is pulling the object and Julia is pushing
Chris is pushing the object and Julia is pulling
none
How can we represent forces?
with arrows
with symbols
none
It is possible to do mathematical operations with forces
True
False
What is the resultant force?
4 N
11 N
7 N
