A cross-country runner accelerates from 4 m/s to 7 m/s over the course of 5 seconds. What is the runner's average rate of acceleration? A. 0.3 m/s/s B. 0.6 m/s/s C. 1.4 m/s/s D. 2.2 m/s/s

Electrical conductors are characterized as materials that

How can you be both at rest and also moving about 107,000km/h at the same time

Give two examples where friction is a nuisance

A negatively charged particle is attracted to A. negatively charged particles, B. positively charged particles, C. only particles that are large. D. all particles that are located close by,

Which of these is a scalar quantity? A. acceleration B. displacement C. length D. velocity

Part of the solar radiation entering the atmosphere about ___ actually reaches the earth's surface

A 36.5 kg box initially at rest is pushed 4.30 m along a rough, horizontal floor with a constant applied horizontal force of 150 N. If the coefficient of friction between box and floor is 0.300, find the following.

3 In a television tube, an electron starting from rest experiences a force of 4.0 * 10-15 N over a distance of 50 cm. The final speed of the electron is (do not worry about relativistic effects) :

Detail some of the anthropogenic changes to Earth's climate and their potential impact on life.

I have completed 40 minutes of exercise today and will enter a short description in the course Activity Log. True or False