Xác định thời gian lên đỉnh và tầm xa của một vật được ném xiên góc α so với phương nằm ngang, vận tốc ban đầu là vo.

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.