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Worksheetsyear 10 terminal velocity
Total questions: 15
Worksheet time: 6mins
Name
Class
Date
1.
True or False: When a resultant force acts on an object, the object must accelerate.
a)
True
b)
False
2.
If no resultant force acts on an object, which of the following could be true?
(select all appropriate answers)
a)
It is accelerating
b)
It is decelerating
c)
It is moving at constant speed
d)
It is stationary
3.
If a resultant force acts on an object, which of the following could be true?
(select all appropriate answers)
a)
It is accelerating
b)
It is decelerating
c)
It is moving at constant speed
d)
It is stationary
4.
If the surface area of a moving object increases, what happens to the magnitude of the air resistance force acting on it?
a)
Increases
b)
Decreases
c)
Remains constant
5.
Compared to an object with a smaller surface area, an object with a larger surface area will have …
a)
a higher terminal velocity
b)
a lower terminal velocity
c)
the same terminal velocity
6.
If an object is moving downwards at constant speed and a force is applied upwards, what is the first thing which happens?
a)
Its speed increases
b)
Its speed decreases
c)
It stops
7.
If an object is moving left at constant speed and a force is applied leftwards, what is the first thing which happens?
a)
Its speed increases
b)
Its speed decreases
c)
It stops
8.
If an object is moving downwards at constant speed and a force is applied upwards, what happens to its downwards speed?
a)
It increases
b)
It decreases
c)
It remains constant
9.
When a skydiver first exits an aeroplane, which force is larger?
a)
Weight
b)
Air resistance
c)
Forces are equal
10.
When a skydiver reaches terminal velocity, which force is larger?
a)
Weight
b)
Air resistance
c)
Forces are equal
11.
When a skydiver first opens their parachute, which force is larger?
a)
Weight
b)
Air resistance
c)
Forces are equal
12.
Describe the motion at point a. on the graph.
a)
constant speed
b)
accelerating
c)
decelerating
d)
stationary
13.
What feature of a velocity time graph gives the acceleration?
a)
gradient
b)
area under graph
c)
x-axis
d)
y-axis
14.
Describe the motion at c
a)
stopped
b)
constant speed
c)
accelerating
d)
decelerating
15.
What is happening to the motion from a to c
a)
it's accelerating throughout
b)
it accelerates to start with then declerates
c)
it accelerates and then the acceleration slows down
d)
it travels at a constant speed
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