Two students in a physics laboratory each have a concave mirror with the same radius of curvature, 45 cm. each student places an object in front of a mirror. the image in both mirrors is two and a half times the size of the object. however, when the students compare notes, they find that the object distances are not the same. what is the distance of the closer object?

f=ma newton's second law 7x8=56n

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.