• 0.4kg
• 2.5kg
•10kg
•250kg

Please help

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.