Am=70kg wannabe stuntman at the edge of mlt rooftop(facing the gandis burst) jumps vertically up with a speed of 4m/s and falls on a trampoline 2m below where he started .if the trampoline acts like a hook's spring and does a maximum extension of 0.284m going down towards ground ,what is the spring constant?

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

Compare the patterns of the two waves shown in the image. which statement is true about these waves?

Which of the following examples illustrates static friction? a box sits stationary on a ramp. a ball rolling on the lawn eventually comes to rest. a car rounds a curve on a road. a fish swims upstream.