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

What is the magnitude of a volcanic eruption in krakatoa, indonesia august 27, 1883?

A 0.75 kg model car is moving west at a speed of 9.0 m/s when it collides head-on with a 2.00 kg model truck that is traveling east at a speed of 10.0 m/s. After the collision, the 0.75 kg model car is now moving east at 11 m/s.

How long does it take a car to travel 450 km at 75 km/hr

Which of these is a correct equation for force? A. F = m * a B. F = m : a C. F = a : m

An automobile battery is an example of a a. wet cell. b. dry cell. c. thermocouple. d. fuse.

Explain why models are often used to study other planets.

The main factors that affect an area's temperature are prevailing winds and mountains. a. True b. False

What is the displacement of an object during a specific unit of time?

Is there an end of rainbow

A downhill skier was able to move 560 meters in 25 seconds. What is the skier's average speed? (Round your answer to the nearest tenth of a meter per second.)