It moves with constant velocity in the horizontal direction
(1) 2
(b)
while accelerating due to the force of gravity in the vertical direction g = 9.8 (m s-2) (1) data
(1)
a=v - u t
(1)
9.8 = v (– 0) 0.55
(1)
v = 5.4 m s-1
(1) [number and unit must be correct]
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4
2.
(a)
(i)
If A exerts a force on B, B exerts an equal but opposite force on A. Or To every action (force) there is an equal and opposite reaction (force) 1
(ii)
Engine/exhaust pushes gases down(A on B) gases push engine/exhaust up (B on A)
(b)
(1) (1)
2
(1) (1)
m s-2
(1)
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3
3
(a)
It is accelerating OR Speeding up (NOT ‘going down the flume’)
(b)
1
(1) (1)
3
(c) (1) (1)
m s-2
(1)
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3
4
(a)
(b)
s = vt 11 = 20 x t = 0·55 s
(1) (1) (1) [number and unit must be correct]
a=v–u t
(1)
9.8 = v – 0 0.55
(1)
v = 5.4 m s-1
(1) [number and unit must be correct]
3
3
(c) 5.4 velocity (m s-1)
2 (d) s = area under graph s = ½ x 0.55 x 5.4
(1) (1)
s = 1·5 m
(1) [number and unit must be correct] 3
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5
(a)
(i)
Acceleration is the change of velocity (not speed) in unit time
(ii)
Direction of satellite is (continually) changing OR Velocity of satellite is (continually) changing OR There is an unbalanced force on the satellite
1
1 (b)
F = 12 - 2 = 10 N
(1)
F = ma 10 = 50 x a a = 0·2 m s-2 direction is right
(1) (1) (1) [number and unit must be correct]
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4
6.
D
7.
B
8.
D
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9.
(a)
(1) (1)
m s-1
3
(1)
[number and unit must be correct]
(b)
s
(1) (1) (1) 3
[number and unit must be correct]
(c)
(i)
(ii)
(wear) tight fitting clothes OR Crouch OR (wear) streamlined helmet OR streamlined shoes OR solid wheels
1
Tyres OR (handle) grips OR brakes OR shoes on pedals OR saddle
1
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10.
(a)
s=
(1) (1) for speed of light (1) for time substitution 3
(b)
Different frequencies/ wavelengths /signals require different detectors/telescopes OR Certain detectors/telescopes cannot pick up certain frequencies/wavelengths/signals OR Different signals have different frequencies/ wavelengths
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1
11.
B
12.
C
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13.
(a)
(1)
(1)
Weight 2
(b)
(i)
(ii)
(1) (1) (1) [correct number and unit required]
Funbalanced = 3352 000 – 3020 000 = 332 000 (N) F = ma 332 000 = 3.08 x 105 x a a = 1.08 m s-2 [correct number and unit required]
(1) (1) (1) (1)
It moves with constant speed in the horizontal direction (1) while accelerating due to the force of gravity in the vertical direction (1)
(c)
(d)
W = mg = (3·08 x 105) x 9.8 = 3·02 x 106 N
(i)
(ii)
The astronaut is falling (towards Earth) at the same rate as the ISS OR The astronaut is in freefall The astronaut exerts a force against the wall and the wall exerts an equal and opposite force against the astronaut (causing him to move)
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3
4
2
1
1
14.
(a) a= v– u t = 11 – 0 5.8 = 1.9 m s-2 (b)
(1) (1) (1)
[correct number and unit required]
displacement = area under graph = ½ x (11 x 5·8) + (11 x 6) = 31·9 + 66 = 97·9 m [correct number and unit required]
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3 (1) (1) (1)
3
15.
B
16.
D
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17.
(a)
(i)
(ii)
s= vt
(1)
s = 2 × 0·75
(1)
s = 1·50 m
(1)
𝑎 =
!!! ! !!!
3 [correct number and unit required]
(1)
9.8 = !.!"
(1)
v = 7.35 ms-1
(1)
[correct number and unit required] 3
(b)
(i)
Same horizontal speed (1) All objects fall with the same (vertical) acceleration. (1)
1. (ii) It moves with constant velocity in the horizontal direction. (1) while accelerating due to the force of gravity in the vertical direction. (1). 2. (b) g = 9.8 (m s-2).
(ii) It moves with constant velocity in the horizontal direction. (1) ... gravity in the vertical direction. (1). 2. (b) g = 9.8 (m s-2). (1) data a = v - u. (1) t. 9.8 = v (â 0). (1).
ultrasound procedure. Why is this? Good contact is important. ..... For example in a telephone system? .... The distance from the centre of the lens to the principal ...
Page 6 ... A galaxy is a group of stars, gases and dust held together by gravity. ⢠The universe is all existing matter and space considered as a whole.
Page 3 .... A galaxy is a group of stars, gases and dust held together by gravity. ⢠The universe is all existing matter and space considered as a whole.
National 5 Physics Summary Notes. Dynamics & Space. 3. F. Kastelein ..... galaxy. Universe everything we know to exist, all stars planets and galaxies. Scale of ...
beyond the limits of our solar system. Space exploration may also refer simply to the use of satellites, placed in orbit around the. Earth. Satellites. The Moon is a ...
F = ma. Example. A toy car of mass 3 kg accelerates at 5 ms-2. Calculate the force acting on the car. Solution: Use F=ma. Know m = 3 kg a = 5 ms-2 so F = 3 x 5.
(ii) green light; ... them) - An electric current (known as a ... light (which contains photons of all 7 colours of the visible spectrum - red, orange, yellow, green, blue,.
S3 Resistance Homework. Answer these questions in your homework jotter, showing full working. 1. The same three resistors are connected in different ways, as.
4) Calculate. Calculate. Calculate the refractive refractive index of a substance substance which has a critical critical critical angle of. 42.5o. (a). (b). (c). (d). (e).
If we supply heat to a solid, such as a piece of copper, the energy supplied is given to the copper particles. These start to vibrate more rapidly and with larger ...
1. Forces and Work. Energy can't be created or destroyed, it can only be changed from one type into another type. We call this rule conservation of energy. Work.
ELECTRICITY is the common name for ELECTRICAL ENERGY. 1. ... We can supply this electrical energy through: ... (green and yellow striped plastic cover).
We use many electrical appliances. ... Which type of electrical appliances cost the m ost to run? .... electric plug to its flex may suddenly become much larger.
uncontrolled fusion reaction and the key to using fusion as an energy source is control. ..... (Wavelength of red light is approximately 7·0Ã10-7 m, green light ...
10â3 m. Width of a credit card. 1 cm (centi). 10â2 m. Diameter of a pencil. Width of a ... Distance to the Andromeda galaxy .... Baryons are made up of 3 quarks.
Material. Speed in m sâ1. Air. 3·0 à 108. Carbon dioxide. 3·0 à 108. Diamond .... Astronomers in both observatories are studying the Andromeda galaxy which is.
consideration to how you will analyse and present your results. ... microphone input of a computer, software can be used to analyse the voltage and hence the.
If we monitor the temperature of the material ... free so that a liquid can be formed. The heat ... A lot of heat energy is required to free the solid particles, so the.
5.4 Angular momentum and kinetic energy . . . . . . . . . . . . . . . . . . . 78 ... 7.2 Gravitational potential and potential energy . ...... order for it to land on the green.
wavelength of green light. ... green light. What affect will there be on the separation of the maxima on the ... The energy is divided between several spectra.