An object moving forward at 10 m/s suddenly begins moving backward at 5 m/s. what is the most accurate explanation for this change?

a. the forces pushing the object forward became greater than the ones pushing the object back causing it to change direction.

b. the force pushing back on the object became greater than the force pushing the object forward.

c. the object was traveling in a straight line until it hit a brick wall and bounced backward.

d. the forces were ubalanced in the forward direction. then they became balanced in the backward direction.

In what direction does the medium move relative to the direction of the wave? explain.

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse

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?