Where do objects becomes weightless and why?

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Isla’s change in velocity is 30 m/s, and hazel has the same change in velocity. which best explains why they would have different accelerations? isla had negative acceleration, and hazel had positive. isla had a different time than hazel. isla had positive acceleration, and hazel had negative. isla went a farther distance than hazel.