You are standing on the ground, watching a bird fly away horizontally at a rate of 9 meters per second. the bird is initially located 25 meters above your head. let θ be the angle measured from the vertical direction to the direction from you to the bird. how fast (in radians per second) is θ changing when the horizontal distance between you and the bird is 12 meters

Aperson standing in a canoe exerts a force of 700 n to throw an anchor over the side. find the acceleration of the canoe if the total mass of the canoe and the person is 100 kg?

What are two different ways you could find the value of a? explain these methods.

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?