Question

An object of mass 100kg is
accelerated uniformly from a
velocity of 4 m/s to 8 m/s in 2
seconds. Calculate the initial and
final momentum of the object
A
B.
400 kg.ms-1, 800 kg ms-1
100 kg ms-1, 400 kg ms-1
200 kg ms-1, 400 kg ms-1
400 kg ms -1,400 kg ms
с
D​

Answer 1

Answer:

option number is the correct one that is 400 kgm/s2 and 800 kgm/s2.....

Step-by-step explanation:

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Answer 2

=> mass of object = 100 kg

=> initial velocity = 4 m/s

=> final velocity = 8 m/s

=> time taken = 2 s

=> momentum ( p ) = mass ( m ) × velocity ( $v_{av}$ )

=> initial momentum = mass × initial velocity

=> initial momentum = 100 × 4 = 400 kg m/s

=> final momentum = mass × final velocity

=> final momentum = 100 × 8 = 800 kg m/s

Therefore, your answer is OPTION no. 1