Question

describing forces
check your understanding question 1 of 4 attempt 2 of 2
which three statements about forces are true?
a. force is the ability to change motion and transfer matter.
b. some forces cause objects around us to move.
c. some forces keep objects around us from moving.
d. force can cause changes in the motion and energy of matter.
e. every force can be identified as one of the fundamental forces.

Explanation:

• Option B: Forces like a push or pull can initiate motion. For example, pushing a book on a table makes it move.
• Option C: Frictional forces (a type of force) can prevent an object from moving. If you push a heavy box lightly, friction might keep it stationary.
• Option D: According to Newton's laws (force - motion relationship) and work - energy theorem (force - energy relationship), a force acting on an object can change its velocity (motion) and its kinetic or potential energy (energy of matter). For instance, when a bat hits a ball (force is applied), the ball's speed (motion) and its kinetic energy change.

• Option A: Force is the ability to change motion (as per Newton's second law \(F = ma\)), but it does not transfer matter. Matter transfer is a different physical process (like in a chemical reaction or physical transport, not related to the definition of force).
• Option E: There are non - fundamental forces. For example, frictional force, normal force are not fundamental forces. Fundamental forces are gravitational, electromagnetic, strong nuclear and weak nuclear forces.

Answer:

B. Some forces cause objects around us to move; C. Some forces keep objects around us from moving; D. Force can cause changes in the motion and energy of matter.