A 0.75 kg cart moving at 2.1 m/s collides with another cart and bounces backward at 0.9 m/s. If the force applied to the cart was 4.5 N, for how much time did the collision last?

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.