Mechanical (sound) waves to earth from satellites. how is this possible? aves are unable to travel through a vacuum, such as through space, but radio waves are transmitted

Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

Olympic skier tina maze skis down a steep slope that descends at an angle of 30∘ below the horizontal. the coefficient of sliding friction between her skis and the snow is 0.10. i found maze's acceleration which is 4.1 m/s^2. but how do you determine maze's speed 4.0 s after starting?