A sprinter can run 12 m/s. How long will it take her to run 1200 m? A. 100 seconds
B. 1000 seconds
C. 12,000 seconds
D. 24,000 seconds

1000

Explanation:

divide the 12 from 1200

Complete Question:

Football player A has a mass of 110 kg, and he is running down the field with a velocity of 2 m/s. Football player B has a mass of 120 kg and is stationary. What is the total momentum after the collision?

Total momentum = 220 Kgm/s.

Explanation:

Given the following data;

For footballer A

Mass, M1 = 110kg

Velocity, V1 = 2m/s

For footballer B

Mass, M1 = 120kg

Velocity, V1 = 0m/s since he's stationary.

To find the total momentum;

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

a. To find the momentum of A;

Momentum A = 220 Kgm/s.

b. To find the momentum of B;

Momentum B = 0 Kgm/s.

c. To find the total momentum of the two persons;

Substituting into the equation, we have;

Total momentum = 220 Kgm/s.