A ball drops down, how to reverse the velocity?

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A ball drops down how do i go about reversing the velocity to make the ball go back?

2 Answers

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First you'll have to detect if it's hitting the ground. You can use OnTriggerEnter for that. If the ground is parallel to the x-axis you'd just need to reverse the y component of your velocity. If you need a more general approach you can use Vector3.Reflect.

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You can also try adding a rigidbody with gravity to your ball, and giving it 'bouncy' physics properties so it would bounce naturally.