(b) Apabila air panas dimasukkan ke dalam suatu gelas kaca yang terdapat sedikit retakan kecil, diperhatikan saiz retakan itu semakin bertambah seperti ditunjukkan dalam Rajah

explanation: in any substance/object, the particles inside it (atoms/molecules) constantly move in random directions and with random speeds (this motion is called brownian motion). as a result, the particles have some kinetic energy (which is proportional to the temperature of the substance).

explanation:

have a great day!

answer; /// the above statement is (true);

the body's situation won't change the forces are equal opposit and on the same body

we need to know the time interval during which the force acts. impulse of force = momentum change