a football is kicked directly upward with a velocity of 50 m/s. Determine: The velocity at 2s -The velocity at 5s -the velocity at 6s -the acceleration at 3s -the overall height of the football. -how far did the football fall between 6s and 7s?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

Which composition of water moves to begin a deepwater current?