Isaac tosses a twig into a river to figure out how quickly the water is flowing. He observes that the twig travels 21 meters south in three seconds. Based on his observations, what is the velocity of the twig?

Two physics students shoot a water-bottle rocket from a 1 m tall stand. They calculate that rocket will travel with the given formula, f (x) = -16t 2+64t+1 where f is its height in feet above ground t seconds after being released.

The energy released by a nuclear reaction results primarily from the

The distance from the sun to Earth is one astronomical unit (AU). 1) True 2) False btw this is science they didnt have a science one

A force of 6.0 N acts on a 3.0 kg object at rest for 10 seconds. What is the change in velocity

What statement is true about earth tectonic plates

A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 35 cm diameter stone is spinning at 200 rpm and has a mass of 28 kg. The coefficient of kinetic friction between the knife and the stone is 0.20.

What is the unit for force we use when calculating F=ma?

A vector of magnitude 20 is added to a vector of magnitude 25. The magnitude of this sum. might be:. A. zero. B. 3. C. 12. D. 47. E. 50

Calculate the gravitational potential energy of a 10kg box on the top shelf of a closet, 2m above the floor

In late adulthood, changes in memory may bot be inevitable however, any decline in memory tends to invite