Two weights, of 9.0 kg and 3.0 kg, are at rest side by side (Figure 4). You apply a force of 30.0 N on the first weight for 5.0 s, and they both slide across the
floor. The larger weight has a force of friction of 18 N, and the smaller weight has a force of friction of
6.0 N.
(a) Calculate the acceleration of the weights during the first 5.0 s.

this means that the temperature of both substances will be equal

the maxium height is 34m/s

explanation:

to push or pull an object in a certain direction is known as force. a force in moving an object from one place to another.

force depends on the mass of an object. so, more is the mass of an object more will be the force required to move the object.

thus, we can conclude that the use of force to move an object is push or pull.