Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?

What is the mass of an object that has an acceleration of 2.63m/s2 when a unbalanced force of 112N is applied to it?

Match the particles with their characteristics, subatomic particles with a positive charge subatomic particles with a negative charge subatomic particles with no charge made of atoms neutrons - > electrons protons molecules

Which type of rock can form if extreme heat and pressure are applied to sedimentary rock? A) granite B) igneous rock C) metamorphic rock D) sedimentary rock

Cardiovascular exercise can

Calculate the momentum of the car before the collision

A spring gains 2.34 joules of elastic potential energy as it is compressed 0.250 meter from its equilibrium position. What is the spring constant of this spring? (1) 9.36 N/m (3) 37.4 N/m (2) 18.7 N/m (4) 74.9 N/m

Form hypothesis: Where do you think we humans get energy?

The distance from home plate to the pitchers mound is 18.5 meters. For a pitcher capable of throwing at 3.85m/s (86mi/hr), how much time elapses between the release of the ball and the ball passing home plate?

A squirrel sitting on the ground starts to run with an acceleration of 5.1 m/s 2. How fast is the squirrel going after 0.25 seconds? A. 20.4 m/s B. 1.28 m/s C. 0.49 m/s D. 3.1 m/s

Describe how the competition between invasive and native species might affect a food web