High School

An object's speed is 0.8 m/s, and its momentum is 200 kg-m/s. What is the mass of the object?

A. 250 kg
B. 200 kg
C. 160 kg
D. 128 kg

Answer :

Final answer:

To find the mass of an object with a known momentum and velocity, one uses the formula m = p / v. Substituting the given values (momentum of 200 kg-m/s and velocity of 0.8 m/s), the mass is calculated to be 250 kg.

Explanation:

The question concerns the concept of momentum in physics, which is the product of an object's mass and its velocity. Momentum (p) is given by the equation:

p = m \(\cdot\) v

where:

  • p is the momentum
  • m is the mass of the object
  • v is the velocity of the object

To find the mass of an object when given its speed and momentum, you rearrange the equation to solve for m:

m = p / v

Substituting the given values:

m = 200 kg-m/s \/ 0.8 m/s = 250 kg

Therefore, the mass of the object is 250kg, which corresponds to answer choice A.

Answer:

A: The mass would be 250kg

Explanation:

In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object. where m is the mass and v is the velocity. The equation illustrates that momentum is directly proportional to an object's mass and directly proportional to the object's velocity.

p= mv

m= p/ v

The explanation to that is:

momentum = mass× velocity

mass= momentum / velocity

THE ANSWER IS A

Hope this helps!