Astudent hops 10 m in 5 sec. based on this speed they estimate they could hop 100 m in 20 sec. is their answer reasonable? explain.

You throw a baseball directly upward at time t = 0 at an initial speed of 12.3 m/s. what is the maximum height the ball reaches above where it leaves your hand? at what times does the ball pass through half the maximum height? ignore air resistance and take g = 9.80 m/s2.

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is