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IG Physics Section 2

Total questions: 50

Worksheet time: 54mins

Name
Class
Date
1.
When a student traveled to the moon 
a)
their mass stayed the same
b)
their weight stayed the same
c)
their weight increased
d)
both their mass and weight remained constant
2.
Instrument used to measure mass
a)
balance
b)
spring
c)
rule
d)
weights
3.
Instrument used to measure weight
a)
balance
b)
Newton meter
c)
pendulum
d)
rule
4.
Weight is
a)
a gravitational force
b)
a gravitational field
c)
a mass
d)
a gravitational acceleration
5.
The product of mass and acceleration is
a)
net force
b)
friction 
c)
weight
d)
velocity
6.
Air resistance is a form of 
a)
thrust
b)
friction
c)
weight
d)
acceleration
7.
If there is no resultant force acting on an object it will 
a)
remain at rest 
b)
continue at a steady velocity
c)
remain at rest or continue at a steady velocity
d)
slow down
8.
When an unbalanced force acts straight on to an object in motion for a certain period of time
a)
it will cause a change of momentum
b)
it will stop the object
c)
it will slow the object
d)
 it will make the object move in a circle
9.
When an unbalanced force acts perpendicular to the direction of motion of a body it will cause
a)
the object to move in a circle
b)
the object to slow down
c)
the object to speed up
d)
the object to maintain a constant velocity
10.
The formula for momentum
a)
p=mv
b)
m=pv
c)
p=m/v
d)
p=v/m
11.
The unit for momentum
a)
kgms-1
b)
N
c)
Wkg
d)
ms-2kg
12.
The equation for impulse
a)
Ft = mv - mu
b)
Fnet = ma
c)
Fw = mg
d)
Ft = mu + mv
13.
The physical quantity of an object that resists change in motion
a)
mass
b)
momentum
c)
force
d)
density
14.
For a system to be in equilibrium the sum of the forces acting must equal zero and 
a)
clockwise moments = anticlockwise moments
b)
the sum of the velocities must equal zero
c)
the sum of the momentums must equal zero
d)
all work must be done around a pivot point
15.
To increase the size of the moment
a)
either increase the mass or the force
b)
increase the perpendicular distance or the force
c)
increase the work
d)
increase the acceleration
16.
If an object is not rigid then an applied force might
a)
stretch the object
b)
squash the object
c)
deform the object
d)
all of these are possible
17.
The Hooke's Law equation
a)
F = kx
b)
F = kx2
c)
k = mg
d)
F = m
18.
If the graph shows points plotted on a Force v extension graph, then the limit of proportionality is indicated by 
a)
point P
b)
point E
c)
point Y
d)
point U
19.
For the rule to be in equilibrium the force on the right hand side must be equal to
a)
30 N
b)
25 N
c)
20 N
d)
12 N
20.
The red point indicates the 
a)
centre of mass
b)
centre of energy
c)
centre of geometry
d)
gravitational field
21.
When water is sitting high up in a mountain lake it has a lot of
a)
gravitational potential energy
b)
chemical potential energy
c)
nuclear potential eneryg
d)
kinetic energy
22.
The equation for gravitational potential energy is
a)
mgh
b)
mah
c)
hag
d)
gam
23.
The equation for kinetic energy is
a)
1/2mv2
b)
1/2mv
c)
1/2m2v
d)
1/2mha
24.

Correct units for power

a)

Watt

b)

J/s

c)

Ns

d)

Js

25.

A filament lamp converts

a)

electrical to light and heat

b)

sound to light

c)

light to electrical

d)

electrical to heat

26.

A crane lifts a 200 kg beam 10 m upwards in a time of 1 minute. How much power did the crane exert?

a)

2000 Watts

b)

333 W

c)

20 000 W

d)

33.3 W

27.

How much work is done by a student pushing a 20 kg lawn mower with 200 N at 38o above the horizontal over a horizontal distance of 100 m?

a)

20 000 J

b)

12 313 J

c)

15 760 J

d)

18 454 J

28.

How efficient is a generator that uses 20 kg of falling water from a vertical height of 20 metres if the output is 200 J?

a)

5%

b)

95%

c)

2000%

d)

50%

29.

Pressure is defined as

a)

Force per unit area

b)

The product of Force and area

c)

The ratio of Force and volume

d)

The ratio of Force to length

30.
Which of these animals would probably cause the greatest pressure on the ground?
a)
A fat cow with big feet
b)
A fat cow with small feet
c)
 A calf with big feet
d)
A calf with small feet
31.
Look at the pressure triangle. How do we calculate the area?
a)
f ÷ a
b)
f x p
c)
p x f
d)
f ÷ p
32.
Convert 10 kg to Newtons
a)
0.098 N
b)
4.5 N
c)
100 N
d)
98 N
33.
Pressure is measured in what units
a)
Newtons
b)
m/s
c)
Pascals
d)
Moles
34.
Uses Uranium
a)
Hydroelectric
b)
Nuclear
c)
Oil
d)
Geothermal
35.
Uses the energy from water stored in a lake
a)
Tidal
b)
Hydroelectric
c)
Coal
d)
Solar
36.
Energy transfer when coal is burnt in a coal power station
a)
Kinetic --> heat
b)
Heat --> chemical
c)
Chemical --> Heat
d)
Electric --> Light
37.
Gives off large amounts of Carbon Dioxide
a)
Solar
b)
Wind
c)
Coal
d)
Nuclear
38.
Changes depending on the weather
a)
Nuclear
b)
Gas
c)
Tidal
d)
Wind
39.
Amount of energy depends on the position of the Moon
a)
Oil
b)
Biomass
c)
Wind
d)
Tidal
40.
Burning of organic material (normally trees)
a)
Solar
b)
Biomass
c)
Hydroelectric
d)
Nuclear
41.
Works best in the daytime
a)
Coal
b)
Wind
c)
Solar
d)
Hydroelectric
42.
Does not pollute the atmosphere
a)
Coal
b)
Oil
c)
Gas
d)
Nuclear
43.
Which is non-renewable?
a)
Wind
b)
Oil
c)
Solar
d)
Tidal
44.
No machine in existence has 100% efficiency due to ____________________.
a)
magic
b)
friction
c)
smoke
d)
input
45.
What is the efficiency of a machine if 55.3 J of work are done on the machine, but only 14.3 J or work are done by the machine?
a)
0.25 Joules
b)
26%
c)
3.86 Joules
d)
386%
46.

Total energy = 200J
Useful energy = 20J

Workout the efficiency of this lightbulb.
efficiency = useful enegytotal energy in ×100efficiency\ =\ \frac{useful\ enegy}{total\ energy\ in}\ \times100  

a)

100%

b)

80%

c)

40%

d)

10%

47.

Total energy = 350J
Useful energy = 70J

Workout the efficiency of this iphoneX.
efficiency = useful energytotal energy in ×100%efficiency\ =\ \frac{useful\ energy}{total\ energy\ in}\ \times100\%  

a)

100%

b)

80%

c)

40%

d)

20%

48.

This car needs 8600J of energy to power it. If 5000J is changed into useful energy, how much energy is wasted?

a)

13600J

b)

3600J

c)

5000J

d)

8600J

49.
What is the work output of a machine that has a work input of 2,800 Joules and an efficiency of 92.3%? 
a)
2,690J
b)
92.3J
c)
0.0082J
d)
2,584.4
50.

What is the useful work output of a machine that consumes 2,800 Joules and an efficiency of 40%?

a)

7000 J

b)

2760 J

c)

1120 J

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