Question

A stone of mass 0.2 kg falls with an acceleration of 10.0 m/s. How big is the force that causes this acceleration?

Answer 1

`\boxed {\boxed {\sf 2 \ Newtons}}`

Step-by-step explanation:

According to Newton's Second Law of Motion, force is the product of mass and acceleration.

`F= m * a`

The mass of the stone is 0.2 kilograms and the acceleration is 10.0 meters per square second.

• m= 0.2 kg
• a= 10.0 m/s²

Substitute the values into the formula.

`F= 0.2 \ kg * 10.0 \ m/s^2`

Multiply.

`F=2 \ kg*m/s^2`

Convert the units.

• 1 kilogram meter per square second (kg*m/s²) is equal to 1 Newton (N)
• Our answer of 2 kg*m/s² is equal to 2 N

`F= 2 \ N`

The force is 2 Newtons.