I need help with these multiple choice questions!

Question 3 {1 point] E-Il The gravitational potential energy of a bird of mass 2.0 kg on a tree branch of height 15 m 'Is most nearly: Os} 151 OlsoooJ 0:13.01 001301 O E} sooJ Question 4 {1 point] E-Il Two objects have the same mass. One is travelling twice as fast as the other. The work that must be done to stop the faster object compared to the work required to stop the slower object 'Is: O A} half as great O B} one quarter as great 0 C} two times greater 0 D} four times greater O E} the same Question 7 (1 point) Listen A mass of 10 kg, initially at rest on a horizontal frictionless surface, is acted upon by a horizontal force of 25 N. The speed of the mass after it has moved 5.0 m is: O A) 15 m/s O B) 250 m/s O C) 10 m/s OD) 125 m/s O E) 5.0 m/s Question 8 (1 point) Listen A 100 kg mass is dropped from a height of 3.0 m. The kinetic energy before striking the ground is: O A) 3000 J O B) 30 J O C) 0.30 J O D) 300 J O E) 3.0 J\f