A student argued that there is less gravity on the moon than on earth. The stundent explained: "You need an atmosphere to have gravity, The moon doesnt have an atmosphere and therefore doesnt have a lot of gravity. Earth hasa thick atmosphere and therefore has much more gravity.

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?