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1 | Page Name ___________________________ Checkpoint Physics Revision: Forces and Motion Speed = distance/time = 100/20 = 50 m/s The dog may have changed speed during its journey
Transcript of checkpointphysics.files.wordpress.com€¦ · Web viewThe dog may have changed speed during its...
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Name ___________________________ Checkpoint Physics Revision: Forces and Motion
Speed = distance/time
= 100/20
= 50 m/s
The dog may have changed speed during its journey
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A
B
D
1.
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iron core
coil of wire
iron
copper
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( 9.3 N + 9.6N + 10.2 N) = 9.7 N 3
To avoid human error
force meter/ Newton meter
9.7 N
Please ring 32.6N
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5.
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Speed = distance/time
= 45/10
= 4.5 m/s
4.5
greater
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D
The ball is attracted to the electromagnet
The electromagnet is switched off and the ball falls
The ball is attracted to the electromagnet for longer because steel stays a magnet even if the switch is off
S
N
NS
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SN
Like Poles repel/ N and N repels
They repel
C
Speed = distance/time
= 3000/600
= 5m/s
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The speed in AB is faster than BC
North Pole South Pole
They repel
\
\
They will attract
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Speed = distance/time
= 300/15
= 20 m/s
The car stops
At the starting point
slower
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Yes. Only a magnet is repelled by another magnet
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4
7
4
10
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8
The steepness/ slope of the lines are different
