Agrasshopper hops along a level road. on each hop, the grasshopper launches itself itself at an angle of 45 degrees. and achieves a range of 0.77 m. what is the average horizontal speed of the grasshopper as it hops along the road? assume that the time spent on the ground between hops is negligible.

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

Gasoline comes from petroleum, which is made from ancient living things. petroleum, therefore, contains a type of energy. a. heat b. nuclear c. biological d. chemical potential

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?