The kinetic energy (KE) of an object can be calculated using the formula:

KE = 1/2 * m * v^2

where:
m is the mass of the object, and
v is the speed of the object.

In this case, the mass (m) of the cannon ball is 40 kg and the speed (v) is 1.5 m/s.

Substituting these values into the formula gives:

KE = 1/2 * 40 kg * (1.5 m/s)^2

First, square the speed:

(1.5 m/s)^2 = 2.25 m^2/s^2

Then, multiply this by the mass and 1/2:

KE = 1/2 * 40 kg * 2.25 m^2/s^2 = 45 Joules

So, the cannon ball has 45 Joules of kinetic energy.

Question

The kinetic energy (KE) of an object can be calculated using the formula:

KE = 1/2 * m * v^2

where:
m is the mass of the object, and
v is the speed of the object.

In this case, the mass (m) of the cannon ball is 40 kg and the speed (v) is 1.5 m/s.

Substituting these values into the formula gives:

KE = 1/2 * 40 kg * (1.5 m/s)^2

First, square the speed:

(1.5 m/s)^2 = 2.25 m^2/s^2

Then, multiply this by the mass and 1/2:

KE = 1/2 * 40 kg * 2.25 m^2/s^2 = 45 Joules

So, the cannon ball has 45 Joules of kinetic energy.

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