a hammer falls off a roof and strikes the ground with a certain kinetic energy. If it fell from a roof twice as tall, how ouwld its kinetic energy compare? Explain.

If one were driving a car with a velocity of - 30 km/h, that would mean that: they were driving at 30 km/h but in the reverse gear they were driving to the west or south (a predetermined negative) they were traveling back in time velocity cannot be

Problema 1 Dos ciudades A y B están separadas por una distancia 1200 Km. Desde A sale hacia B un móvil con velocidad constante de 50 Km/h. una hora y media después sale desde B hacia A otro móvil con velocidad constante de 85 Km/h.

Lightning sometimes happens between clouds. suggest a possible way that a discharge can occur between clouds

A friend says that tempature increases as altitude increases because you are moving closer to the sun. Is this true?

Use the formula h = - 16t2 + v0t. (if an answer does not exist, enter dne.) a ball is thrown straight upward at an initial speed of v0 = 56 ft/s. (a) when does the ball initially reach a height of 40 ft?

Under what condition (s) will an object be in equilibrium? Notice that equilibrium in physics has a broader definition. (A) Only if it is moving with constant velocity. (B) Only if it is at rest.

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.