Why does physics involve math?

Arthur and Betty start walking toward each other when they are 100 m apart. Arthur has a speed of 3.0 m/s and Betty has a speed of 2.0 m/s. Their dog, Spot, starts by Arthur's side at the same time and runs back and forth between them at 5.0 m/s.

The diameter of a red blood cell is about 3x10^-4 inches to centimeters. for this question I wrote 7.6x10^-4cm put it was mark incorrect and i dont know why its about conversions, but the question is the following, The diameter of a red blood cell,

Dr. gavin decides that instead of conducting a 2 ' 4 independent-groups factorial design, he is going to conduct a 2 ' 4 within-subjects factorial design. which of the following things will change?

What types of friction occur when you ride a bike through a puddle

12. What does positive and negative acceleration indicate?

A 6.0 m wire with a mass of 50 g, is under tension. A transverse wave, for which the frequency is 810 Hz, the wavelength is 0.40 m, and the amplitude is 4.0 mm, is propagating on the wire.

Which has the greater change in momentum, a 50 gram clay ball that strikes a wall at 1 m/s and sticks or a 50 gram superball that strikes the wall at 1 m/s and bounces away at 0.8 m/s. Explain?

What human activity promotes the evolution of organisms that are resistant to certain chemicals?

How do plants absorb light energy from sun

Explain why the vapor pressure of molecules doubles or triples for every 10