If a honeybee is flying 7.0 m/s, what is the kinetic energy (Joules) if its mass is 0.1 g? *

2.45 × 10^-3 Joules

Explanation:

Kinetic energy is the energy assumed by a moving object. The kinetic energy, which is measured in Joules (J) is calculated using the formula:

K.E = 1/2 mv^2

Where K.E= kinetic energy

m = mass ( 0.1 g)

v = velocity (7 m/s)

Since Joules is Kgm^2/s^2, the unit of mass must be kilograms (kg), and velocity must be in metre per seconds (m/s).

Hence, we need to convert 0.1 grams to kg by dividing by 1000

1000g = 1kg

0.1g = 0.1/1000 = 0.0001kg

K.E = 1/2 mv^2

K.E = 1/2 × 0.0001 × 7 × 7

K.E = 1/2 × 0.0049

K.E = 0.00245

Hence, K.E = 2.45 × 10^-3 Joules

one centimetre is equal to 0.01 metres