Question

Calculate the momentum of a carof mass 300 kg with the speed of 18 km/hr

Answer 1

p=mv

=0.3×5

=1.5kgm/s.

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Answer 2

Answer :-

1500kg m/s

Explanation :-

Given :

Mass = 300kg

Velocity = 18km/hr

Convert 18km/hr into m/s

=> (18*1000)/(60*60)

=> 5m/s

To Find :

Momentum = ?

Solution :

We know,

$\boxed{\sf{p=mv}}$

where,

p is the momentum

m is the mass and,

v is the velocity.

Put their values and find “p”

$\sf{}\implies 300kg\times 5m/s$

$\sf{}\implies 1500kg\ m/s$

Therefore,momentum of the car is equal to 1500kg m/s

☆Know more☆

• Momentum: momentum is the quantity of motion stored in an object.

• Since momentum is the product of mass and velocity (p=mv) of an object.Therefore momentum increases with increase of either mass or velocity.

• Momentum is directly proportioval to the mass of an object and momentum is also directly proportional to the velocity of an object.This means if a lighter and a heavier object is moving with same velocity then heavier object will have more momentum than lighter one.

• SI unit of momentum is kg m/s.