WorksheetsChapter 3 – Forces and Motion
Total questions: 9
Worksheet time: 18mins
The diagram shows a raft with a sail. The diagram shows the horizontal forces acting on the raft at one moment. Calculate the resultant horizontal force acting on the raft.
1200 N to the right
400 N to the left
400 N to the right
2000 N to the right
The initial acceleration of the train is 0.75 m/s2. Mass of the train is 560 000 kg. Calculate the resultant force that acts on the train at this time.
420 000 N
240 000 N
210 000 N
560 000 N
The diagram shows the vertical forces that act on a large plastic ball as it is falling. State the name given to each of the forces shown in the diagram.
1.2 N = Weight, 0.3 N = drag force
1.2 N = Weight, 0.3 N = contact force
1.2 N = Upthrust, 0.3 N = drag force
1.2 N = Mass, 0.3 N = drag force
The diagram shows the vertical forces on a rocket. Calculate the resultant force on the rocket.
28.8 N
25.9 N
32.9 N
74.2 N
There are two forces acted on the rocket toy. Which diagram show correct vector addition?
An object falls from sky and penetrate the Earth's atmospheric layers. The object is moving faster and faster. Then the drag force from air start to reduce the acceleration of the object until it is no longer change its speed. How do we call the speed of the object that moves under the influence of gravitational force and drag force and the object is no longer accelerated?
Terminal velocity
Station velocity
Maximum velocity
I don't know
Some scalar quantities are ....
mass, weight and volume
mass, time and energy
density, surface area and power
acceleration, force and weight
speed is zero because weight the parachutist equals to drag force
the parachutist is slowing down because weight the parachutist equals to drag force
the parachutist has reached the terminal velocity because his weight equals to drag force
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