What is a vector?

A. A scalar quantity.

B. A quantity that has magnitude and direction.

C. A magnitude that can be measured.

D. A direction.

A person and a kayak paddles down river at an average speed of 10 km/hr. After 3.25 hours, how far has she traveled?

What is formed when two or more substances are so evenly mixed that you can't see the different parts

An astronaut in his space suit and with a propulsion unit (empty of its gas propellant) strapped to his back has a mass of 146 kg. The astronaut begins a space walk at rest, with a completely filled propulsion unit.

Two trees have perfectly straight trunks and are both growing perpendicular to the flat horizontal ground beneath them. The sides of the trunks that face each other are separated by 1.1 m. A frisky squirrel makes three jumps in rapid succession.

A beam of light in air is incident on the surface of a rectangular block of clear plastic (n = 1.44). If the velocity of the beam before it enters the plastic is 3.00 · 108 m/s, what is its velocity inside the block?

Explain the difference between strength, muscular endurance and power

You kick a ball with a speed of 18 m/s at an angle of 32 degrees. How far does the hall land?

Sound waves move through some liquid at a speed of 1500 m/s. If the wavelength is 3 m, what is the frequency of the wave?

What is the wavelength of radar waves with the frequency of 6.0 x 10 ^10 Hz?

a machine is required to produce and output force of 600 newtons. if the machine has a mechanical advantage of 6, what input force must be applied?