Physics Final (sem. 1)

A small 20-kilogram canoe is floating downriver at a speed of 2 m/s. What is the canoe's kinetic energy?

• 400J

• 80J

• 22J

• 40J

The forces acting on a falling leaf are

• gravity and static friction

• gravity and air resistance

• weight and rolling friction

• air resistance

A person walks 1 mile every day for exercise, leaving her front porch at 9:00 am. and returning to her front porch at 9:25 am. What is the total displacement of her daily walk?

• 1 mile

• 0

• 25 minutes

• none of the above

A 4-kilogram cat is resting on top of a bookshelf that is 3 meters high. what is the cats gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8 m/s^2?

• 29J

• 12J

• 118J

• 7J

What is transferred by a force moving through a distance?

• mass

• motion

• energy

• force

Which of the following substances will float in corn syrup? (the density of corn syrup is 1.38 g/cm^3

• silver (10.5 g/cm^3)

• glycerin (1.26 g/cm^3)

• copper (8.9 g/cm^3)

• iron (7.8 g/cm^3)

What is the SI unit of pressure?

• g/cm^3

• m/s^2

• the pascal

• the newton

The kinetic energy of the pendulum bob in Figure 15-1 increases the most between locations

• A and C

• B and D

• C and D

• A and B

The property of matter that resists changes in motion is called

• weight

• inertia

• friction

• gravity

On the celsius scale, at what temperature does water boil?

• 0

• 212

• 100

• 32