A bicycle is traveling at 10 m/s on a flat road. As it reaches a hill, it starts accelerating, eventually reaching 36 m/s. What is its average speed on the hill?

What are similarities and differences between refraction, reflection, diffraction and absorption?

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)