Can momentum be negative?

Which has more inertia a shopping cart full or groceries or an empty shopping cart?

The cheetah is one of the fastest-accelerating animals, because it can go from rest to 19.6 m/s (about 44 mi/h) in 2.9 s. If its mass is 108 kg, determine the average power developed by the cheetah during the acceleration phase of its motion.

All of the following activities produce quantitative data exept A. Measuring the rate of gas production from a chemical. B. Describing the clarity of water in a sample C. Calculating the energy released from an electrochemical reaction

For work to be done on an object, a. some force need only be exerted on the object. b. the object must move some distance as a result of a force. c. the object must move, whether or not a force is exerted on it. d. the object must not move.

True or false: convection is the term used to describe how molecules move within a fluid such as a liquid or gas.

What trends were seen in Mendeleev's periodic table?

Through which medium would EM waves travel the fastest? A. The Ocean B. The Atmosphere C. Rocks

Average mass of a toy car (small, hot wheels) ?

A cannon directed straight upward launches a ball with an initial speed v. The ball reaches a maximum height h in a time t. Then, the same cannon is used to launch a second ball straight upward at a speed 2v.

Does the sun fuse hydrogen into helium or vice versa?