Question

Write T for the true statement and F for the false one
A-According to the principle of work and energy, work can be either a positive or negative scalar.

B-The static coefficient of friction is always greater than the dynamic coefficient of friction.

C-The linear impulse and momentum equation is obtained by integrating the friction force equation with respect to time.

D-General plane motion consists of transelational and rotational motions togather.

Answer 1

A =it is a true statement work can be negative as when force is applied on the opposite direction it results in negative work.

B= its a true statement because when the body is at rest there is more forces acting on it when compared to object when in motion.

C= Impulse force is force that is applied for a very short interval of time hence it can be obtained by integrating it with respect to time. Honge its a true statement.

D= A combination of rolling and translation motion is know as the general plane motion only.so it is also a true statement.

If your doubt is cleared please give an up vote.its a humble request to you.