Question

1. jeff is pushing a rock up a hill with a force of 85 n. if chris comes to help and chris can push with a force of 60 n, what is the net force on the rock?

Explanation:

Step1: Determine the direction of forces

Both Jeff and Chris are pushing the rock in the same direction (up - hill). When forces act in the same direction, we add them to find the net force.

Step2: Calculate the net force

The formula for net force \(F_{net}\) when forces \(F_1\) and \(F_2\) act in the same direction is \(F_{net}=F_1 + F_2\). Here, \(F_1 = 85N\) and \(F_2=60N\). So, \(F_{net}=85 + 60\).

Answer:

\(145N\)