An object of mass 5 kg and velocity 10 m/s has a linear momentum of: (a) 5 kg-m/s, (b) 10 kg-m/s, (c) 50 kg-m/s, (d) 250 kg-m/s^2, (e) none of the above.

If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?