Investigating Factors Influencing Vehicle Stopping Distance
Design an experiment to investigate how the stopping distance of a model vehicle (e.g., a dynamics trolley or toy car) is influenced by its initial speed, mass, and the type of surface it moves on before braking is applied. Your experimental design should include:
Determining Acceleration and Net Force from a Velocity-Time Graph
A particle with mass \(m = 3.0\,\text{kg}\) follows a velocity-time graph that is a straight line beginning at the origin \((0,0)\). The graph shows that after \(5.0\,\text{s}\), the particle’s velocity reaches \(15\,\text{m s}^{-1}\).\n\nDetermine the acceleration of the particle, and then calculate the net force acting on the particle.
Calculating Final Velocity Under a Constant Force
A 5.00 kg box is initially at rest on a frictionless horizontal surface. A constant horizontal force of 20 N is applied to the box for 4.0 seconds. Calculate the final velocity of the box.