How much work must be done on a 5-kg sled to increase its speed from 10

m/s to 15 m/s?

A. 25

B. 312.5 J

C. 562.5 J

D. 5

What is referred to as reflectivity of surfaces?

Light travels approximately 982,080,000 ft/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year.

On earth a rock is dropped and falls 4.9 meters just before it hits the ground. how much time did the rock take to fall this distance

Someone drops a 50 - g pebble off of a docked cruise ship, 70.0 m from the water line. A person on a dock 3.0 m from the water line holds out a net to catch the pebble.

How is mass wasting different from other forms of erosion?

An internal combustion engine uses fuel, of energy content 44.4 MJ/kg, at a rate of 5 kg/h. If the efficiency is 28%, determine the power output and the rate of heat rejection.

Fleas often live on dogs or cats and bite them for meal of blood. This can be harmful to the cat or dog that is bitten. What type of symbiotic relationship is that?

Who was the scientist that discovered Pluto wasnt a planet

Astronauts appear weightless while working in the International Space Station because A) they are in a state of free fall. B) there isn't any gravity in outer space. C) they have very little mass when in outer space.

The distance between two consecutive crests is 2.5 meters. Which characteristics of the wave does this distance represent?