If Force = 200 N and Mass = 20 kg, what is acceleration?

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?

Distinguish between a transverse wave and a longitudinal wave.

Why don't you see your reflection in water with waves or repples