Examination 2021 Two bodies A and B of masses 100g and 400g respectively are moving
towards each other with a speeds 100cm/s and 10cm/s.
They suffer a
head-on collision and stick together.
(i) In which direction will the combined mass move after the collision?
(02 marks)
(ii) What will be the distance travelled by the combined mass after 10
seconds.
(01 marks)
(iii) Assuming the two bodies to be originally at the same temperature and
specific heat of both the two bodies to be 0.1Jg-'K-1, calculate the rise
in temperature of the combined mass after the collision. (02 marks)​

35.98  million  mile my friend

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)

(5.8/6.8)x100% = 85.3%