Question

Practice Problems. Kinetic and Potential Energy

1. Which has more kinetic energy a mosquito flying 20 miles per hour or a
biodist at that speed?
Why?
2. Which has more kinetic energy a mosquito flying 5 miles per hour or one flying
3. Thassing which of the following speed or mass - will increase kinetic energy
more? How do you know this?
3. Which has more gravitational potential energy: a cupcake on a bakery's top shelf
ora 9 inch cake next to it? Why?
5. Which has more gravitational potential energy the cupcake on the top shelf or
the cupcake on the middle shell Why?
6. What are some other kinds of potential energy other than gravitational potential
energy? Give 3 examples.

Answer 1

Answer: 1. Biodist(?) 2. If the one flying at 5mph is going faster(slower) than the other, it has more( less) KE 3. increasing speed increases KE more than increasing mass because KE = 0.5*m*v^2 second 3. Cake tin has greater mass and gravitational PE is proportional to mass. 5. The higher cupcake as greater gravitational PE because it is proportional to height. 6. Electrical, chemical and nuclear PE

Explanation:whatever a biodist is, it probably has greater mass than a mosquito so at the same velocity, has more KE

Unfortunately, “thassing” is unintelligible, but

KE = 0.5*m*v^2

Gravitational PE = m*g*h