Abullet with mass 25g and initial horizontal velocity 320m/s strikes a block of mass 2kg that rests on a frictionless surface and is attached to one end of a spring. the bullet becomes embedded in the block. the other end of the spring is attached to the wall. the impact compresss the spring a maximum distance of 25cm. after the impact, the block moves in simple harmonic motion. 1. what is the frequency of the oscillation? 2. sketch graphs for the block’s position, velocity, and acceleration as a function of time (x vs. t, v vs. t, a vs. t). check to make sure your graphs are consistent. 3. write an description of what is happening to the energy in this system from the time the bullet is fired until the block returns to its starting position for the first time. meaning, tell a story about how the energy changes form or moves from one object to another.

it would be c. predictability

statement #3 on andre"s list is false.

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.