Abox slides down a slope described by the equation y=(0.05 x2)m, where x is in meters. if the box has x components of velocity and acceleration vx= -4m/s and ax= -1.2m/s@ at x = 3m, determine the corresponding y components of velocity and acceleration at this instant

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve