You are in the bleachers at the World Series and a game winning baseball (mass 0.15 kg) approaches at 29 m/s. You want to catch it, but you don't want to hurt your had since that might impede your ability to do physics homework. To lessen the impact you slow it down with your hand over a displacement of 1 m as you catch it. What external work must you do on the baseball in J

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.

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr