A 5500-kg freight trunk accelerates from 4.2 m/s to 7.8 m/s in 15.0 s by the application of a constant force a) what change in momentum occurs b) how large of a force is exerted?

(a) The change in momentum of the trunk is 19800 kgm/s,

(b) The force exerted on the trunk is 3960 N

The can be defined as the product of the mass of a body and its change in velocity. The S.I unit of change in momentum is kgm/s

(a) To calculate the change in momentum of the trunk, we use the formula below.

Formula:

Whee:

From the question,

Given:

Substitute these values into equation 1

(b) To calculate how large is the force was exerted on the trunk, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute into equation 2

Hence, (a) The change in momentum of the trunk is 19800 kgm/s, (b) The force exerted on the trunk is 3960 N

Learn more about change in momentum here: link

answer: option c.

explanation:

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.