Which of the following is a unit of speed?

A) h

B) nm

C) cm/y

D) km/s^2

Andrew Haber is an astronaut in space, far away from gravitational and frictional forces. He throws a tennis ball.

What does frequency mean in science

You must exert a force of 4.5 N on a book to slide it across a table. If you do 2.7J of work in the process, how far have you moved the book?

A 7150-kg railroad car travels alone on a level frictionless track with a constant speed of a 3350-kg load, initially at rest, is dropped onto the car.

What is another name for marshes, estuaries and swamps?

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?

Describe how mass and distance affect gravitational force.

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?