A crash test dummy is inside a test car moving at 55 km/h. How fast is the dummy moving relative to the seat he is sitting in?

What are the horizontal and vertical parts of vectors called

What are scientific endeavors

Design an investigation to compare the durability of the three different brands

Suppose you are using total internal reflection to make an efficient corner reflector (see section 7). If there is air outside and the incident angle is 45.

4.7 cm. The tube is sealed at one end and loaded with lead shot to give it a total mass of M = 130 g. The tube floats in water (of density 1 g/cm3) in vertical position, loaded end down.

A 55kg cart is pushed by a force of 225 n. what is the carts acceleration?

F we wanted to compare muscular endurance between a very large person and a very small person, what method would be the best method to use? a. absolute method b. maxing out c. callisthenic method d. fixed percentage of rm method

After creating a question and forming a hypothesis, what is the next step in the scientific method

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.51 s after passing his window. Roger's room is on the second floor, 10 m above the sidewalk.

Which statements accurately describe the Doppler effect?