Download 10 Motion Trial Test

Year 10 Motion - Trial Test 2012
Name: ___________________________
Section A Multiple choice
1
A ball is thrown vertically into the air.
It travels 3 m up and then returns to
your hand. The distance travelled is:
A0m
2
B3m
B3m
9
Which of the following is best
explained by inertia (Newton’s First
Law)?
A Unbelted passengers will be
thrown forward when a car stops
suddenly.
B A gun recoils when a shot is fired.
C A car accelerates at a lesser rate
when it is fully loaded.
D The weight of an object varies
from planet to planet.
10
What is the average speed of the whole
distance?
A 1km/h
B 2 km/h
C 3 km/h
D 4 km/h
D 12 m.
C6m
D 12 m.
How far would an ant walking at a
speed of 6 millimetres per second
travel in 30 minutes?
A 0.18 m
C 10.8 m
4
The diagram below shows part of a
ticker tape used to record the motion of
a toy car as it moves along a table. Each
marked interval represents a time
interval of 0.1 seconds. During which
one of the four time intervals P, Q, R
and S was the car travelling at a
constant speed?
A P
B Q
C S
D S
A ball is thrown vertically into the air.
It travels 3 m up and then returns to
your hand. The displacement is:
A0m
3
C6m
8
B 8.9 m
D 180 m
100 km/h is the same as:
A 3.6 m/s B 27.8 m/s
C 100 m/s D 3600 m/s.
5
A car accelerates from zero to 60
km/h in 5 seconds. The average
acceleration of the car is:
A 12 m/s/s
B 300 m/s/s
C 3.33 m/s/s
D 6.67 m/s/s.
6
A rock rolls for 30 seconds down a hill
at an average speed of 4 m/s. What
distance does it travel?
A 240 m
B 120 m
C 34 m
D 7.5 m
7
A 90 N force is applied to a 65 kg
mass. The mass will accelerate at:
A 0.72 m/s2
C 1.4 m/s2
B 1.2 m/s2
D 5.9 m/s2.
Section B Short/extended answer
1
A hungry rabbit comes out of its burrow and
hops 5 metres to reach a juicy plant. It stops to
eat the plant, and then hops back to its burrow.
The whole journey takes the rabbit 10 seconds.
(a) How long did it take the rabbit to eat the
plant?
(b) At what point was the rabbit hopping the
fastest?
(c) What is the rabbit’s displacement?
a
b
c
2
Look at the following distance–time graph.
a
(a) What is the runner’s instantaneous speed at
3 seconds?
(b) How long does it take the runner to cover a
distance of 60 metres?
(c) What is the runner’s average speed for the
whole race?
3
Calculate the distance travelled by the
following:
a a dog running at 2 m/s for 3.5 seconds
b a jogger travelling at 1.5 m/s for 30
seconds.
b
c
a
b
4
The diagram below shows a small section of
ticker tape used to record the motion of a
student pulling the tape through a ticker timer.
The marked interval represents a time interval
of 0.1 seconds.
(a) What is the average speed (in cm/s) shown a
during the marked interval?
(b) Is the speed throughout the marked interval
constant, increasing or decreasing?
(c) How often does this ticker timer produce a b
new dot?
c
(d) Describe each of the following strips
using dot spacing, increasing,
decelerating, accelerating, constant
velocity, etc
d
5
A car stopped at traffic lights increases its
a
speed by an average of 4 m/s each second
during the first five seconds after the light turns
green.
(a) What is the average acceleration of the car? b
(b) Calculate the speed of the car (in m/s) after
five seconds.
(c) Is the car breaking the 60 km/h speed limit
after five seconds? Show any calculations
c
necessary to make a decision.
6
Calculate the acceleration of a 5 kg toy car if it
is pushed along a floor so that the total force
acting on it is 30 N. Show all your calculations.
7
Newton’s Second Law of Motion describes
a
how the mass of an object affects the way that
it moves when acted upon by one or more
forces.
(a) State Newton’s Second Law of Motion in
b
symbols. State what each symbol
represents.
(b) Use Newton’s Second Law of Motion to
explain why it takes the space shuttle so
long to leave the ground when it is launched
and why it speeds up so rapidly only a
minute or two later.
8
Describe each of the graphs from the following
A
B
C
D
9
10
Draw the shape of the graphs of the followings
(In Distance-Time graphs)
(a) stationary at some distance
(b) constant velocity
(c) acceleration
(a)
(b)
A bungee jumper with a weight of 600 N falls
through a distance of 50 m and stops just before a
reaching the surface of a river.
(a) How much work is done on the bungee
jumper by the force of gravity?
(b) List three other forms of energy to which
b
most of the bungee jumper’s lost
gravitational potential energy is converted
during the fall.
(c)
11
Using the speed–time graph shown
below, calculate the:
a distance travelled in the first 3 s
b what happens to the moving object
between 2 – 4 s
c compare the acceleration in the time
interval from 0-2s and 4-7 s
to 7 s.
a
b
c
12
A ball is dropped from the top of a
building. It takes 4.0 s to reach the
ground. (g = 10m/s2)
a Calculate the speed of the ball as it hits
the ground.
b What assumption did you make in your
calculation for part a?
a
b
13
a
Calculate the force required to:
a accelerate a 5.0 kg mass at a rate of 2.0
m/s2
b stop a 3.0 kg mass with a deceleration of b
1.8 m/s2.
14
a
An astronaut lands on an unexplored
planet. The mass of the astronaut (and
spacesuit) is 130 kg. His weight on the
planet is 1338 N.
a What is the value of the acceleration due b
to gravity on this planet?
b What would the mass of the astronaut
(and spacesuit) be on Earth?
15
Give the name and symbol of the units
usually used to measure:
a speed
b acceleration
c force
d energy.
a
b
c
d
16
a
Calculate the work done when:
a a force of 7 N moves an object through a
distance of 5 m
b a 5 kg object is lifted from a height of
b
15m.
17
An object of mass 3 kg is dropped from
a height of 12 m.
a
b
c
18
a
What is the potential energy of the mass
before it is dropped?
Assuming all the potential energy of the b
object is converted to kinetic energy,
what is the speed of the ball as it reaches
the ground?
To what form or forms of energy is the
c
kinetic energy of the ball converted after
impact?
Give two differences between Mass and
Weight
a
b
19
a
a) What causes friction between two
surfaces, such as the wooden block and
table?
b) Draw a diagram to show the above with a b
friction force of 6N and the pushing force
of 10N.
c) What is the net force?
c
20
‘An object has zero acceleration. The
object must therefore be at rest.’
Is this statement
21
A car travelling at 30m/s has its brakes
applied and come to a stop with a uniform
deceleration of 8 m/s2.
a) How long does it take for the car to stop
whilst the brakes are being applied
b) What is the braking distance of the car?
a
b
Good Luck to your TEST