Answer:
5.704kg.m/s toward the pitcher
Explanation:
Impulse (Ft)= change in momentum
Impulse= m(v-u)
m=0.155 kg , v=18.4 m/s , u=18.4m/s
impulse=0.155[-(18.4) - (18.4)]
= 0.155(-36.8)
= -5.704 kg.m/s
the negative means towards the pitcher
More force to accelerate. If you push a car compared to a beach ball, which will you have to push harder for it to move? That's pretty much what the question is asking, if that helps any:)
A force is a push or pull upon an object resulting from the object's interaction with another object. Whenever there is an interaction between two objects, there is a force upon each of the objects. When the interaction ceases, the two objects no longer experience the force. Forces only exist as a result of an interaction.
This is reactivity. It describes how easily one substance reacts with another
True, they represent the direction of motion
