PLEASE HELP ASAP 3. JRod is trying to get a cart to reach the wall at the end of the system pictured below. She uses a ramp to get the cart some energy to cover that distance. However, as shown below, using the ramp as constructed, she was not able to reach the wall. a. What can Jrod change to get the cart to reach the wall? b. Explain how you know.​

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

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount