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Review Physics SMT 1 2021/2022
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C
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
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
Christine is a free-fall parachutist
A
What force is on water drops which have just left the tank
gravitational force
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
The diagram shows the horizontal forces acting on the water skier. calculate the resultant force and its direction
500 – 300 = 200 (N) to the right
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
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 steps​
2 s
State the relationship between acceleration, velocity and time.
acceleration = change in velocity/time (taken) a=Δv/t
State the equation linking force, mass and acceleration.
F= m.a  (Force = mass x acceleration)
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)