What is instantaneous speed

A car of mass 1091 kg climbs a 5.0° slope at a constant speed of Assuming that air resistance and friction with the road may be neglected, at what rate must the engine deliver mechanical energy to the car?

Suppose that an object in free fall were somehow equipped with a speedometer. by how much would its speed readings increase with each second of fall?

In which of the following situations is the greatest amount of work accomplished? A boy lifts a 9-newton box 0.3 meters. A boy lifts a 4-newton box 0.6 meters. A boy lifts a 6-newton box 0.3 meters. A boy lifts a 2-newton box 0.6 meters.

Determine the force per meter on a lightning bolt at the equator that carries 20 000 A and is perpendicular to the Earth's magnetic field, 3x10-5 T.

A temperature of 200°F is equivalent to approximately a. 37.8°C. b. 232°C. c. 93.3°C. d. 840°C.

A bowler applies 14 N of force to a 4.5 kg bowling ball. Find the ball's acceleration.

You are given two objects of identical size, one made of aluminum and the other of lead. You hang each object separately from a spring balance. Because lead is denser than aluminum, the lead object weighs more.

Why are the oldest parts of the ocean floor no older than about 200 million years

A firefighter with a weight of 707 N slides down a vertical pole with an acceleration of 2.79 m/s2, directed downward. (a) What is the magnitude of the vertical force on the firefighter from the pole?

As latitudes increase temperatures gennerally decrease. explain?