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Calculate the momentum of the following objects:

a. A 75 kg speed skater moving forward at 16 m/s.

b. A 135 kg ostrich running north at 16.2 m/s.

c. A 0.8 kg kitten running to the left at 6.5 m/s.

Answer :

Answer:

momentum(M in Kgm/s)=mass(m in Kg) *velocity(v in m/s)

a) M=m*v. m=75kg,v=16 m/s

M =75*16

M=1200Kgm/s

b)M=135*16.2

M=2187Kgm/s

c)M = 0.8*6.5

M=5.2Kgm/s

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Rewritten by : Barada

The momentum of an object having mass

a) 75kg speed skater moving forward at 16m/s is 1200 kg.m/s

b) 135kg ostrich running north at 16.2m/s is 2187 kg.m/s

c) 0.8 kg kitten running to the left at 6.5 m/s is 5.2 kg.m/s

What is momentum ?

Momentum is defined as mass times velocity of body. it is denoted by p and its SI unit is Kg.m/s. It has both magnitude and direction. it is a vector quantity.

i.e. p = mv

a) Given,

mass m = 75Kg

velocity v = 16m/s

momentum p = 75× 16 = 1200 kg.m/s

b) Given,

mass m = 135Kg

velocity v = 16.2m/s

momentum p = 135×16.2 = 2187 kg.m/s

c) Given,

mass m = 0.8Kg

velocity v = 6.5m/s

momentum p = 0.8×6.5 =5.2 kg.m/s

Hence momentums of a), b) and c) are 1200 , 2187 and 5.2 kg.m/s respectively.

Hence to know more about Momentum, click :

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