Question

Calculate the final velocity after a 119 kg rugby player who is initially running at 7.35m/s collides head on with a padded goalpost and experiences a backward force of 17500n for 5.5x10⁻² s?

Answer 1

To calculate the final velocity of the rugby player after colliding with the goalpost, we can use the formula Vf = Vi + (F/m) * t, where Vf is the final velocity, Vi is the initial velocity, F is the force experienced by the rugby player, m is the mass of the rugby player, and t is the duration of the force. Plugging in the given values, we can calculate the final velocity.

Step-by-step explanation:

To calculate the final velocity, we can use the formula:

Vf = Vi + (F/m) * t

where:

Vf is the final velocity,

Vi is the initial velocity,

F is the force experienced by the rugby player,

m is the mass of the rugby player, and

t is the duration of the force.

Plugging in the values from the given question, we have:

Vf = 7.35 m/s + (-17500 N/119 kg) * (5.5 x 10^-2 s)

Simplifying the equation gives us the final velocity of the rugby player after the collision.