State the relationship between acceleration, velocity and time.
acceleration = change in velocity/time (taken) a=ฮv/t
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15
The diagram shows a man pulling a child on a sledge.The acceleration of the sledge is 1.5 m/s2. The mass of the child and sledge is 38 kg. Calculate the force needed to produce this acceleration.
38 x 1.557 (N)
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15
draw a free body diagram of a water skier being pulled along by a boat.
friction to the left. tention to the the right, normal forces, gravitational force
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15
The photograph shows a water skier being pulled along by a boat. what are two forces acting on the water skier
tention force and frictional force, normal force, gravitational force
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15
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b
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eraser
Reset score!
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seesaw
Swap points!
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gift
Win 15 points!
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baam
Lose 10 points!
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15
What force is on water drops which have just left the tank
gravitational force
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15
State the equation linking force, mass and acceleration.
F= m.aย (Force = mass x acceleration)
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15
Christine is a free-fall parachutist
A
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15
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A
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banana
Go to last place!
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seesaw
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fairy
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20
25
lifesaver
Give 15 points!
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15
A train begins a journey from a station and travels 60 km in a time of 20 minutes. What is the average speed of the train? A 3.0 m / s B 5.0 m / s C 50 m / s D 60 m / s
C
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thief
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gold
Win 50 points!
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rocket
Go to first place!
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baam
Lose 20 points!
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15
The graph shows how the speed of a van changes with time for part of its journey. In which labelled section is the van decelerating?
B
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15
The sledge starts from rest and accelerates at 1.5 m/s2 until its velocity is 2.8 m/s. the time taken to reach 2.8 m/s. show that time taken to reach 2.8 m/s is about 2s pls tell with stepsโ