How much work is required to raise a 0.75 kg flag from shoulder height (1.2m) To the top of the flag pole (4 m)?

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Coal contains energy. a. light b. kinetic c. chemical d. mechanical

Avector a⃗ has a length of 8.6 m and points in the negative x direction. find the x component of the vector −3.7a⃗ .