13. ball of clay with mass 0.100 kg directly dropped from 1.50 m above the ground. (a) what is the
speed of the clay ball just before it hits the ground? (b) if the clay ball stick to the floor after hitting
the ground in 0.00250 s, calculate the force on the clay by the floor. (ignore the gravity) (c) what is
the force created on the ground by the clay ball? (ignore the gravity) (d) why is the force of gravity
not that important for part b and c? (e) calculate the impulse on the ball (f) calculate the impulse on
the ground.

Answer the radiant sun;

Answermuch larger;

The figure is missing but we can answer anyway.the correct answer is "releasing the string". in fact, when the person is holding the bow and the arrow, the kinetic energy of the arrow is still zero (because the arrow is not moving). the moment the arrow is released, it acquires a velocity v, so its kinetic energy will become different from zero: where m is the mass of the arrow and v its velocity.  all the other options, instead, do not increase the kinetic energy of the system: -  pulling farther back on the string : this will just increase the elastic potential energy of the system-  holding the arrow higher: this will increase the gravitational potential energy of the system (which is given by u=mgh, where h is the height above the ground)-  decreasing the mass of the arrow: this will decrease the gravitational potential energy of the system (which is given by u=mgh, where m is the mass)

Electric force between two charged object varies inversely as the square of distance between them (coulomb's law). this means if two charged objects move away force between them decreases.