What are the 4 significant figures of 31,546,000?

A quarterback threw a football at 24 m/s at a 45° angle. If it took the ball 3 seconds to reach the top of its path. how long was it in the air? Assume the ball is caught at the same height that it left the quarterback's hand.

A huge cannon is assembled on an airless planet having insignificant axial spin. The planet has a radius of 5.00 * 106 m and a mass of 1.46 * 1023 kg. The cannon fires a projectile straight up at 2000 m/s.

A ball is rolled uphill a distance of 5 m before it slows, stops, and begins to roll back. The ball rolls downhill 9 m before coming to rest against a tree. What is the magnitude of the balls displacement? A. 4 meters B. 9 meters C. 14 meters D.

In the equation for the gravitational force between two objects, which quantity must be squared

The area of the united states that has the highest level of average daily solar radiation by month would be

How to identify additional materials

Tarzan runs at 6 m/s and grabs a vertical vine (negligible mass) 4.1 m long which is tied to a tree at the top. Tarzan swings up. Determine the maximum height Tarzan will swing up and the angle the vine makes respect to vertical.

What is the safest place to be amid the coronavirus?

What is the change in internal energy if 60 J of heat are added to a system and the system does 40 J of work on its surroundings? Use AU = Q-W.

A 35-N bucket of water is lifted vertically 3.0 m and then returned to its original position. How much work did gravity do on the bucket during this process?