What Is the Speed of a Ball After Bouncing Off a Charging Elephant?

[vortec135]

elastic

a charging bull elephant with mass of 5230 kg comes directly towards you with a speed of 4.45 m/s. you toss a 0.150 kg rubber ball at the elephant with a speed of 7.91 m/s. When the ball bounces back to you what is its speed?

not too sure about how to approach this question.. thanks!

 

[alphysicist]

Hi vortec135,

elastic

a charging bull elephant with mass of 5230 kg comes directly towards you with a speed of 4.45 m/s. you toss a 0.150 kg rubber ball at the elephant with a speed of 7.91 m/s. When the ball bounces back to you what is its speed?

not too sure about how to approach this question.. thanks!

You've said it is an elastic collision. What is conserved in an elastic collision? What two equations are used in this case?