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SPM Physics Quick Challenge 2: Forces and Motion

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.
How far does the car travel before it reaches a steady speed?
a)
10m
b)
20m
c)
100m
d)
200m
2.
Which statement about mass and weight is correct?
a)
Mass and weight are both forces
b)
Neither mass nor weight is a force
c)
Only mass is a force
d)
Only weight is a force
3.
Which quantity is measured in newtons?
a)
density
b)
energy
c)
pressure
d)
weight
4.
Two forces act on an object.
In which situation is it IMPOSSIBLE for the object to be in equilibrium?
a)
The two forces act in the same direction
b)
The two forces act through the same point
c)
The two forces are of the same type
d)
The two forces are the same size
5.
In a race, a car travels 60 times around a 3.6km track. This takes 2.4 hours. What is the average speed of the car?
a)
1.5 km/h
b)
90 km/h
c)
144 km/h
d)
216 km/h
6.
A woman lifts 20 bricks, each of weight 6N.
What other information is needed to calculate the useful work done in lifting the bricks?
a)
the distance she lifts the bricks
b)
the mass of the bricks
c)
the time taken to lift the bricks
d)
the volume of the bricks
7.
Which graph best represents a graph of a car travelling down a freeway at a CONSTANT speed?
a)
A
b)
B
c)
C
d)
D
8.
A _____ is a pull or a push.
a)
force
b)
friction
c)
gravity
d)
speed
9.
What is Newtons 2nd law?
a)
equal&opposite force
b)
law inertia
c)
f=ma
10.

Newton’s law states that for every action, there is an ________ reaction.

a)

unequal and opposite

b)

equal and similar

c)

stronger and opposite

d)

equal and opposite

11.
Even when a train is moving slowly, it is very difficult to overcome its inertia in order to stop.  Why?  
a)
It's lack of speed
b)
The length it travels
c)
It's excessive mass
d)
Air resistance
12.

How can Newton's second law be represented mathematically?

a)

F=ma

b)

F=mv/t

c)

p=mv

d)

All are correct

13.
A 0.250 kg cart moving at 0.400 m/s has how much momentum?
a)
0.1 kg-m/s
b)
1 kg-m/s
c)
10 kg-m/s
d)
100 kg-m/s
14.
Softer landings tend to
a)
increase impact force
b)
increase force
c)
increase collision time
d)
increase change in momentum
15.
The difference between a car hitting a wall vs. a car hitting a hay stack is
a)
the Impulse on the car hitting the wall is greater
b)
the change in momentum of the car hitting the wall is greater
c)
the force on the car hitting the hay stack is greater
d)
the collision time of the car hitting the hay stack is greater
16.
The units for Impulse are
a)
N/s
b)
N.s
c)
N
d)
m/s
17.
The purpose of crumble zones on a car is to
a)
decrease time of impact.
b)
increase force of impact.
c)
increase the time of impact.
d)
decrease the impulse during impact.
18.

What is the resultant force?

a)

40 N left

b)

0 N Balalnced

c)

400 N right

d)

40 N right

19.

Which could be an example of an unbalanced force?

a)

A plate sitting on a dining table

b)

A ball at the top of a hill that is not moving

c)

Earth orbiting the Sun

d)

A football that has been thrown to the goal post.

20.

Energy from a compressed spring would be an example of...

a)

kinetic energy

b)

elastic energy

c)

gravitational energy

d)

chemical energy

21.
The SI unit of work is?
a)
Joules
b)
Watts
c)
Newtons
d)
meters
22.
The SI unit for power is...?
a)
Watts
b)
Joules
c)
Newtons
d)
Meters
23.
Why does the total amount of mechanical energy stay constant in a system?
a)
energy is not created or destroyed
b)
energy leaves
c)
energy enters
d)
energy is not converted from one form into another
24.
What is gravity?
a)
A force
b)
Energy
c)
A push
d)
All of them
25.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
26.
Diagram shows three arrangements of springs, X, Y and Z. All the springs are identical.
Which comparison is correct about the extension of X, Y and Z?
a)
Z < X < Y
b)
Z < Y < X
c)
X < Z < Y
d)
X < Y < Z
27.
Which of the following graphs represents Hooke's Law
a)
A
b)
B
c)
C
d)
D
28.
Which comparison about springs X and Y is correct?
a)
Spring X is softer than spring Y
b)
Spring Y has a smaller spring constant, k
c)
The original length of spring X is longer than spring Y
d)
To stretch 1 cm, work done on spring X is smaller than on spring Y
29.
Efficiency is....
a)
measured in Joules.
b)
a percentage.
c)
measured in Watts.
d)
measured in Newtons.
30.

The Law of Conservation of Energy states:

a)

Energy can created or destroyed but not transformed

b)

Energy cannot be created or destroyed, it can only transformed

c)

Energy can't be created, destroyed or transformed

d)

Energy cannot be created or destroyed.

31.

What kind of energy does an object possess when it's resting on top of the hill?

a)

Potential Energy

b)

Chemical Energy

c)

Kinetic Energy

d)

All of the above

32.

Efficiency is calculated by Energy Out divided by Energy In, expressed as a percentage

a)

False

b)

True

33.

What does the solid line on this graph represent?

a)

Constant speed

b)

Acceleration

c)

At rest

d)

deceleration

34.
What is the speed this motion?
a)
constant speed
b)
not moving
c)
speed increasing
d)
speed increasing at a constant rate
35.

what is the motion described in the graph

a)

all of above

b)

constant speed

c)

acceleration

d)

constant position

36.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
37.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
38.
Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?
a)
car
b)
bike
c)
they are equal
d)
cannot determine using the info provided
39.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
40.
The impulse is ______ the change in momentum
a)
Greater than
b)
Equal to
c)
less than
d)
always double
41.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
42.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
43.
If two objects have the same mass, then the faster moving object has ____________ momentum.
a)
more 
b)
less
c)
the same
44.
While playing pool, Emma notices that the pool balls bounce apart.  What type of collision is this?
a)
Elastic
b)
Inelastic
c)
Explosive
d)
Force
45.
Jorge noticed a collision outside the coffee shop where two cars collided and stuck together.  What type of collision did he observe?
a)
Elastic
b)
Inelastic
c)
Completely inelastic
d)
none
46.

Force = ma is the formula from

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

47.

Which of the following would transfer more energy?

a)

Lowering ball 1 before release

b)

Raising ball 1 higher before release

c)

Gently putting ball 1 down next to ball 2

d)

Keeping ball 1 in the same place

48.

The purpose of crumple zones on a car is to

a)

decrease time of impact.

b)

increase force of impact.

c)

increase the time of impact.

d)

decrease the impulse during impact.

49.
can a bullet have the same momentum a truck?
a)
yes
b)
no
50.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision

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