Question

question #7: two people are trying to push a large desk across the floor. each person pushes with an equal amount of force. the total amount of force they exert on the desk is 400 newtons. the desk does not move. what is the amount of force exerted by the desk on each person? 0 n, 200 n, 400 n, 800 n. question #8: momentum is a property of a moving object that is equal to its mass multiplied by its. acceleration, gravity, velocity, inertia

Explanation:

Question #7

Since the desk is not moving, the net force on it is 0. The total force exerted by the two - people is balanced by the force exerted by the desk on them. Given the total force exerted by the people is 400 N, according to Newton's third law (action - reaction forces are equal in magnitude and opposite in direction), the force exerted by the desk on each person is half of the total force they exert on the desk when they push with equal force. So, 400 N is the total force they exert on the desk, and the force exerted by the desk on each person is 200 N.

Momentum ($p$) of a moving object is defined by the formula $p = mv$, where $m$ is the mass of the object and $v$ is its velocity. So momentum is a property of a moving object that is equal to its mass multiplied by its velocity.

Answer:

200 N

Question #8