Several motorboats with the same mass are used in an experiment. The forces of the different motors versus their accelerations are graphed. What is the y-intercept of this graph?

Question

• the mass
• zero
• the velocity
• the inverse of the mass

Answer 1

The y-intercept of the graph represents the value of the force when the acceleration is zero. In this case, it would mean the force applied by the motor when there is no acceleration. Since the question states that the motorboats have the same mass, the y-intercept of the graph would be equal to zero.