A 60-kg bungee jumper stands at the top of a 50-m tall bridge. The jumper has a bungee secured to his ankles. The original length of the bungee is 25 meters. After falling 25 meters, the jumper reaches a maximum speed of 22m/s. He continues to fall until he comes to rest instantaneously and then is pulled back up by the bungee. Describe the energy transformations during the fall and return trip upward.

it is called kinetic energy

1 the 4 is sig

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.