A tennis player strikes a tennis ball from underneath with her racket. The ball is sent straight up with an initial velocity of 19 m/s. How high above the striking point will the ball travel?

A. 9 m
B. 9.8 m
C. 18 m
D. 19 m

An air bubble of volume 20 cm³ is at the bottom of a lake 40 m deep, where the temperature is 4.0°c. the bubble rises to the surface, which is at a temperature of 20°c.take the temperature of the bubble’s air to be the same as that of the surrounding water. just as the bubble reaches the surface, what is its volume?

You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?

The first step in cloud formation a) warmed air cools and condenses. b) solar energy causes warm air to rise. c) solar energy causes water vapor to condense.