A car travels 20 km west, then 20 km south. what is the magnitude of its displacement?

A) 0 km

B) 20 km

C) 28 km

D) 40 km

Vector A makes equal angles with x, y and z axis. value of its components (in terms of magnitude of vector A will be?

Laser transmissions travel at a higher speed than the radio waves true or false

Renald completed only one trial of his experiment. what effect will this most likely have? a. the results are more likely to have errors. b. the results are more likely to be precise. c. the experiment will be harder to replicate. d.

Will is a scientist. He's designing a spacecraft that would allow people to land on Mars. Will's mass on Earth is 75 kilograms. Will knows that the gravitational pull of Mars is less than the gravitational pull of Earth.

Jason applies a force of 4.00 newtons to a sled at an angle 62.0 degrees from the ground. What is the component of force effective in pulling the sled horizontally along the ground?

Which activity involves using fossil fuels directly or indirectly? 1) eating fresh fruit for a snack 2) cooking hot dogs on a campfire 3) using crayons to color 4) walking to school

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction

Where would aliens be if they really do exist here on Earth?

If the mass of an object is 84g and the volume is 12cm3 what is the density