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bearhunter [10]
2 years ago
12

A track athlete throws a 2kg discus into a field with a velocity of 21m/s. What is the momentum of the discus?

Biology
2 answers:
BartSMP [9]2 years ago
6 0

Answer:

Given :

Momentum of disc = 42 kg m/s

Velocity of disc = 21 m/s

To Find :

Mass of the disc.

Solution :

❖ Momentum is defined as the product of mass and it's velocity..

Mathematically, p = m × v

p denotes momentum

m denotes mass

v denoted velocity

➛ It is a vector quantity having both magnitude as well as direction.

➛ It can be positive, negative or zero.

➛ SI unit : kg m/s or N s

By substituting the given values;

➙ p = m × v

➙ 42 = m × 21

➙ m = 42/21

➙ m = 2 kg

∴ Mass of the object is 2 kg.

Knowledge BoosteR :

As per newton's second law of motion, force is measured as the rate of change of linear momentum.

Formula : F = dp / dt

Grace [21]2 years ago
3 0
P=mv
p= 2 kg ( 21m/s)
P= 42 kg. m/s
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