Momentum Calculate the momentum of the following objects: a. a 65 kg skateboarder moving forward at the rate of 3 m/s b. a 20 kg toddler in a car traveling west at the rate of 22 m/s c. a 16 kg penguin at rest

What is the momentum of a 1,200-kilogram car traveling at 15 meters per second due east?

For each pair, determine whether the objects have the same momentum. If the objects have different momentums, determine which object has more momentum. a. a car and train that have the same velocity b. a moving ball and a still bat c. two identical balls moving at the same speed in the same direction d. two identical balls moving at the same speed in opposite directions

A bag of sugar has a mass of 2.26 kg. What is its weight in newtons on the moon, where the acceleration due to gravity is one-sixth that on Earth?

Which words fits better in the sentence? _________ tres desastres ayer en esta región. (sube) (ocurrieron)

Applying Concepts What happens to the gravitational force between two objects if their masses do not change but the distance between them becomes four times as much?

What is the difference between free fall and weightlessness?

Identifying Examples List the action and reaction forces in three force pairs. Do not use examples from the chapter.

A baseball player catches a line-drive hit. If the reaction force is the force of the player's glove stopping the ball, the action force is a. the force of the player's hand on the glove. b. the force applied by the player's arm. c. the force of the ball pushing on the glove. d. the force of the player's shoes on the dirt .

An object's acceleration is never a. directly proportional to the net force. b. inversely proportional to the object's mass. c. in the same direction as the net force. d. in the opposite direction as the net force.

Many cities and towns develop near sources of water. Write a paragraph describing the sources of water used by your community.

A bag of sugar has a mass of 2.26 kg. What is its weight on Jupiter, where the acceleration due to gravity is 2.64 times that on Earth?

Making Predictions How will acceleration change if the mass being accelerated is multiplied by three but the net force is reduced to half?

A student tests the second law of motion by accelerating a block of ice at a rate of $3.5 \mathrm{m} / \mathrm{s}^{2}$. If the ice has a mass of 12.5 kg, what force must the student apply to the ice?