A girl with mass of 40 kg sits on a sled at rest with a man of 15 kg. What is the kinetic energy of the girl and sled together

A scientific hypothesis must be

You must record your daily workouts on a

The mean distance from Saturn to the sun is 9 times greater than the mean distance from Earth to the sun. How long is a Saturn year?

A 1300 kg car carrying four 84 kg people travels over a "washboard" dirt road with corrugations 3.2 m apart. The car bounces with maximum amplitude when its speed is 13 km/h.

What kind of light can be seen by the human eye

When the sun is directly overhead, a hawk dives toward the ground with a constant velocity of 5.35 m/s at 52.0° below the horizontal. Calculate the speed of its shadow on the level ground. M/s?

How do the tension of the cord and the force of gravity affect a pendulum? A. They are the competing forces that act on a pendulum as it swings. B. They are the two factors that affect the period of a pendulum. C.

What is an example of static friction

What is the configuration of NE

Why does ice generally have very little friction when it is in contact with other materials?