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A canon ball of mass 500g is fired with a speed of 15m/s-1. Find: its momentum.
Concept: undefined >> undefined
A body of mass 60 kg has the momentum 3000 kgm/s-1. Calculate: the speed of the body.
Concept: undefined >> undefined
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How much energy is gained by a box of mass 20 kg when a man, runs carrying the box with a speed of 3 m/s-1 to catch the bus?
Concept: undefined >> undefined
Stat the principle of an ideal machine.
Concept: undefined >> undefined
Shows a lemon crusher.
- In the diagram, mark the position of the fulcrum F and the line of action of load L and effort E.
- Name the class of lever

Concept: undefined >> undefined
Complete the following sentence :
Mechanical advantage = ___________ × velocity ratio
Concept: undefined >> undefined
Complete the following sentence :
A scissors is a ___________ multiplier.
Concept: undefined >> undefined
How does the frequency of sound given by a stretched string depend on its
- length,
- tension?
Concept: undefined >> undefined
Name the three constituents of an atom and state their mass and charge of each. How are they distributed in an atom?
Concept: undefined >> undefined
Define the term atomic number.
Concept: undefined >> undefined
Define the term mass number.
Concept: undefined >> undefined
A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?
Concept: undefined >> undefined
Under what condition will a set of gears produce a gain in speed
Concept: undefined >> undefined
Define Translational motion.
Concept: undefined >> undefined
In the following case write yes, if the work is being done and no if no work is being done.
A coolie standing with a heavy load on his head
Concept: undefined >> undefined
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
Concept: undefined >> undefined
Is power a scalar or a vector quantity?
Concept: undefined >> undefined
Can two agents, doing the same work, have different power?
Concept: undefined >> undefined
