Question

Assertion: The momentum (p) of a body is defined as the product of its mass (m) and velocity [
(v) and has the same direction as that of the velocity.
Reason: Its SI unit is kilogram meter per second (kg m s -1).
a) Both A and Rare true and Ris the
b) Both A and R are true but Ris not the
correct explanation of assertion.
correct explanation of assertion.
c) A is true but Ris false.
d) A is false but Ris true.​

Answer 1

Answer:

b) both A and R are true but R is not the correct explanation of assertion

Explanation:

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Answer 2

Answer:

B

Explanation:

Momentum is the product of the mass of a particle and its velocity. Isaac Newton's second law of motion states that the time rate of change of momentum is proportional to the force acting on the particle.

From Newton's second law it follows that, if a constant force acts on a particle for a given time, the product of force and the time interval (the impulse) is equal to the change in the momentum.

Therefore p = F*Δt =  m(mass)* a(acceleration)*Δt

Since Force is constant acceleration is also constant and therefore , a*Δt = change in velocity(Δv) , assuming initial velocity to be zero : Δv = V(final velocity) and hence p = m * v and thus the formula .

Also SI unit can never be a reason for an assertion(logic)