What gives you a frame of reference for your speed when you are riding a train

a. the wheels of the train

b. the sky overhead

c. the train tracks

d. the station

The box leaves position x=0 with speed v0. The box is slowed by a constant frictional force until it comes to rest at position x=x1. Find Ff, the magnitude of the average frictional force that acts on the box.

A racecar travels at an average speed of 80m/s in a race the total distance of the race is 640000m how long does it take the racecar to finish the race

Anything that takes up space and has weight is called

A student wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. To test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil.

A worker pushes a box in a factory. In each case, decide which force has the greater magnitude: the force exerted by the worker on the box or the force exerted by the box on the worker.

Imagine you are digging a hole to the center of the earth. In which order would dig through them? A. inner core, outer core, upper mantle, lower mantle, crust B. crust, upper mantle, lower mantle, outer core, inner core C.

Why is objectivity important in science

Which scientist's work led to our understanding of how planets move around the Sun?

The process of gathering information through the senses is called what?

Are earths surface is made up of plates the move. And why