1. Biểu diễn các yếu tố lực sau a) Điểm đặt tại vị trí M trên vật. Phương nằm ngang. Chiều từ phải qua trái. Độ lớn 12N

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

Acatapult is tested by roman legionnaires. they tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units): range = 0.4 km; angle of launch = π/5 rad; landing height = launch height. what is the initial velocity of launch of the boulders if air resistance is negligible?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final