Can a person be moving in a positive direction even if their acceleration vector is negative?

One consequence of Einstein's theory of special relativity is that mass is a form of energy. This mass-energy relationship is perhaps the most famous of all physics equations: E=mc2, where m is mass, c is the speed of the light, and E is the energy.

Find the work done in moving an object along a vector r = 3i + 2j - 5k if applied force is F = 2i - j - k

How long will it take for a sound impulse to travel through a copper rod 25 kilometers long?

The center on a high school basketball team wants to increase the maximum height of his jump. What statement correctly describes how he could achieve this goal? A) Wearing lighter shoes would increase the heights of his jump.

Two masses sit at the top of two frictionless inclined planes that have different angles. Which mass gets to the bottom first?

If a pressure gauge measure an increase in 3*10^ (5) Pa on an area of 0.7 m^2, calculate the increase in the force applied to the area?

Which of the following is an example of potential rather than kinetic energy? a. water rushing over Niagara Falls b. a molecule of glucose c. a crawling beetle foraging for food d. light flashes emitted by a firefly

If a force of 15 newtons [N] is applied to a surface and the pressure is measured as 4,000 pascals [Pa], what is the area of the surface in units of square milimeters [mm2 ]?

An engineer has the task of producing an aluminum alloy with a density of 3.0 grams per cubic centimeter. She comes up with the perfect alloy and saves a sample of it. Which mass and volume measurements correspond to this sample? 7 g and 2.

What must be your car's average speed in order to travel 235km in 3.25 hours?