The area of a typical eardrum is about 5.0 10-5 m2. (a) Calculate the sound power (the energy per second) incident on an eardrum at the threshold of hearing.

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

Acar of mass 800kg is moving at a speed of 2.2m/s.

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving