Question

a ball of mass 1kg and a car of mass 1000kg has the same K.E which one has the most momentum ​

Answer 1

Answer:

$k.e. = \frac{1}{2} m {v}^{2}$

$\sqrt{2mk.e.} = mv = momentum$

since kinetic energy of both the bodies is same

therefore momentum is directly proportional to square root of mass of the body.

here, mass of car is greater than mass of ball

hence momentum of the car is more than that of the ball.

Answer 2

Answer:

Given that,

Mass m=1000kg

Speed v¹

=36km/h=10m/s

Speed v²

=108km/h=30m/s

We know that,

The change in momentum

ΔP=m (Δv)

ΔP=m×(v²–v¹)

ΔP=1000×(30−10)

ΔP=2×10⁴kgm/s

Hence, the change in momentum is 2×10⁴kgm/s

Explanation:

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