Question

People say that a heavy vehicle travelling fast has lots of momentum.
However scientifically, momentum = mass x velocity. Like velocity,
momentum is a vector, so a (+) or a (-) is used to indicate its direction. An
object accelerates when a resultant force acts on it. Therefore, its velocity
will change and so will its momentum. The link between the force and the
rate of change of momentum It produces is known as Newton's second law of
motion. In a collision or an explosion, momentum is conserved.
(i) A body whose momentum is constant must have constant
a) force
b) velocity c) acceleration d) all of these
I
(ii) Newton's second law of motion gives us a measure of
a) Force b) inertia c) mass
d) acceleration
(iii) Write the SI unit of momentum
a) gm/s b) gm/s c) kg m/s
d) kg m/s
(iv) Write down the equation linking force and momentum
a) F = m(v-u)/t b) F = a/m c) p = mv d) F = v-u/t​

Answer 1

Answer:

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