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Driver Physics
Driver Physics
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Year 10 quiz including newtons laws and the physics of driver safety
Flashcards
32 cards
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Questions
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Answers
1
Calculate g-forces felt by an astronaut when his pod-2000kg, can generate 75,600N of force.
3.8g's
37.8 g's
15,428,571.4
151,200,000
2
KE=1/2 mv
2
What can this equation calculate?
velocity
kinetic energy
all of them
mass
3
Does friction make a roller coaster.........
go at a constant speed
faster
stop
slower
4
Which number denotes the maximum gravitational potential energy?
3
1
2
4
5
Newtons second law is concerned with
mass , force and acceleration
inertia
equal and opposite reactions.
6
During which time intervals does the tape show increasing speed?
C
D
B
A
7
speed =
distance multiplied by time
distance divided by time
displacement divided by time
displacement multiplied by time
8
Whats happening between A-B
Acceleration
Constant speed
Deceleration (negative acceleration)
9
What is the GPE at 3?(mass of the vehicle is 1000kg)
343000J
147000J
274400J
98000
10
What does the area under this graph represent?
speed
time
how long it takes
distance travelled
11
An object moves with constant speed in a straight line. Which statement is true?
The net force acting on the object cannot be determined.
The net force acting on the object depends on the speed.
The net force acting on the object is zero.
No forces are acting on an object.
12
What's happening between B and C
Deceleration (negative acceleration)
Acceleration
constant speed
13
Newtons third law is concerned with......
equal and opposite reactions
apples
inertia
force
14
Between what two times did the traveller not change position?
12s-16s
4s-7s
7s-9s
0s-4s
15
what is the significance of the negative sign on this graph?
the traveller is standing still
the traveller is walking backwards
the traveller has gone in the opposite direction
the traveller is skipping
16
Calculate the average speed between the start and 4s.
20 m/s
1.25 m/s
0.8 m/s
17
0=home. After 3s what is the travelers position?
4m from home
1m from home
3m from home
2m from home
18
Which of the following is NOT true about gravity?
Gravity has no effect on a helium filled balloon.
F=mg
The moon is kept in orbit by Earth's gravitational pull.
There is gravitational attraction between galaxies.
19
If driving in a car with unsecured items, what happens to them when you slam on the breaks?
they keep going forward
the stay where they are
nothing
they go backwards
20
What is the distance travelled in the first 4 seconds?
8m
16m
14m
4m
21
Where does it represent constant speed?
B
C
A
D
22
What's happening between C-D?
Deceleration(negative acceleration)
Acceleration
constant speed
23
During which time intervals does the tape show decreasing speed?
C
D
B
Two of these answers are correct.
24
What is the equation for g-force?
force divided by acceleration
acceleration multiplied by gravity
acceleration divided by gravity
mass multiplied by acceleration
25
Calculate the kinetic energy on the top of hill 3
343,000 J
98,000 J
68,600 J
274,400 J
26
the units for speed are not
m/s
they are all units for speed
m/s2
km/hr
27
What equation would you use?
F= m x a
GPE=mgh
GPE=KE
Both 2 and 3
28
What is the equation for momentum?
P=mv
V=mg
M=pv
F= ma
29
How do we work out acceleration?
Change in speed divided by time taken
final - initial speed
mass multiplied by velocity
speed divided by time
30
what is 9.8 ms
2
?
force
gforce
inertia
gravity
31
What letter is used for momentum?
P
m
V
M
32
Newtons first law is concerned with.......
inertia
equal and opposite reactions
force
apples
