Calculate the momentum of a 5 kg ball in free fall at 20 m/s. Show your work.

100kgm/s

Step by step solution:

mass(m) = 5kg

Initial velocity (u) = 0

i.e u = 0 for free fall

Final velocity (v) = 20m/s

Momentum = m(v - u)

= 5(20 - 0)

= 5(20) = 100kgm/s.

Explanation:

Momentum can be found using the following formula.

where p is the momentum, m is the mass, and v is the velocity.

1. Define Variables

The mass is 5 kilograms and the velocity is 20 meters per second.

2. Calculate Momentum

Substitute the values into the formula.

Multiply.

The momentum of the ball is 100 kilograms meters per second.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

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