1) Which has greater between a kilogram of feathers and a kilogram of pennies? Which has greater ? Which has greater ?
2) What is the in of a 3 kg textbook?
3) Convert your own weight from pounds to Newtons. Then calculate your mass in kilograms. Show all work.
4) The (g) on the moon is 1/6 that on the surface of Earth. Based on your answers to the previous question, what would your weight be on the moon? What would your mass be on the moon?
4) A 7 N pushes on an object to the right and a 7 N force pushes on the object to the left. What is the ? Can the object be in ?
5) A 5 N force pushes on an object to the right and a 7 N force pushes on the object to the left. What is the net force? Can the object be in static equilibrium?
6) You push on a large box with 120 N of force, but it doesn’t move. How large is the force? Draw a of the situation.
7) Helping a 48 lb toddler learn to float in a swimming pool you notice that it feels as though they only weigh 5 lbs. How large is the on the toddler? Draw a free body diagram of the situation.
8) What weight of water must the toddler in the previous question be ?
9) An object has a of 0.5 m3. What is the maximum volume of water it can displace? What weight of water can it displace?
10) The object in the previous problem has a weight of 150 N. Will it float?
11) Is the object in the previous problem more or less dense than water?
11) Calculate the density of the object referred to in the previous problem.
12) An object has a weight of 5.5 N and an of 3.5 N when fully submerged. Will the object float?
13) Calculate the of the object in the previous problem.
relation between the amount of a material and the space it takes up, calculated as mass divided by volume.
a quantity of space, such as the volume within a box or the volume taken up by an object.
a measurement of the amount of matter in an object made by determining its resistance to changes in motion (inertial mass) or the force of gravity applied to it by another known mass from a known distance (gravitational mass). The gravitational mass and an inertial mass appear equal.
the force of gravity on on object, typically in reference to the force of gravity caused by Earth or another celestial body
the rate at which an object changes velocity when gravity is the only force acting on the object
any interaction that causes objects with mass to change speed and/or direction of motion, except when balanced by other forces. We experience forces as pushes and pulls.
the total amount of remaining unbalanced force on an object
the state being in equilibrium (no unbalanced forces or torques) and also having no motion
a force that acts on surfaces in opposition to sliding motion between the surfaces
a graphical illustration used to visualize the forces applied to an object
the upward force exerted by any fluid upon a body placed in it
pushed out of original position, typically in reference to fluid pushed out of the way by an object placed in the fluid, or an object being displaced from its equilibrium position
the reading on a scale that is used to measure the weight of an object that is submerged in a fluid