What is the net force on a cart that is pulled to the right with 120 pounds and to the left with 30 pounds?
A ball is thrown downwards from a roof at 24.0m/s. What is the velocity of the ball after 4s?
To determine the net force on the cart, we need to find the vector sum of the forces acting on it. The force pulling to the right with 120 pounds can be represented as +120 pounds, and the force pulling to the left with 30 pounds can be represented as -30 pounds.
To calculate the net force, we add the two forces together: +120 pounds + (-30 pounds). To do this, we need to pay attention to the signs. Adding a positive number to a negative number is the same as subtracting the two values, so +120 pounds + (-30 pounds) is equal to 120 pounds - 30 pounds.
By subtracting 30 pounds from 120 pounds, we find that the net force on the cart is 90 pounds to the right.