## What is the kinetic energy of a bicylcle with a mass of 15 kg traveling at a velocity of 3 m/s?​

Question

What is the kinetic energy of a bicylcle with a mass of 15 kg traveling at a velocity of 3 m/s?​

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3 years 2021-09-05T04:41:16+00:00 2 Answers 14 views 0

1. KE = 0.5 x mv^2

Kinetic energy equals 1/2 times mass times velocity squared.

Mass = 15kg

Velocity = 3m/s

Plug it into the formula.

KE = 0.5 x 15(3^2)

KE = 0.5 x 15(9)

Multiply the mass and velocity squared.

KE = 0.5 x 135

Then, multiply the result by 1/2 or 0.5

KE = 67.5

The kinetic energy of a bicycle that has a mass of 15kg and travels at 3m/s is 67.5J.

67.5 J

Explanation:

Kinetic energy can be found using the following formula.

where m is the mass in kilograms and v is the velocity in m/s.

We know the bike has a mass of 15 kilograms. We also know the velocity is 3 m/s. Therefore, we can substitute 15 for m and 3 for v

Evaluate the exponent first. 3^2 is the same as 3*3, which is equal to 9.

Multiply 15 and 9.

Multiply 1/2 and 135

Add appropriate units. Kinetic energy uses Joules or J as the units.

The kinetic energy of the bike is 67.5 Joules