A spring stretches by 18 cm when a bag of potatoes weighing 56 N is suspended from its end. How much elastic potential energy in J is stored in the spring when it is stretched this far?

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