Rigidbody forces and velocity in Unity - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to apply a force to the Rigidbody.

Unity

rigidbody.[1](Vector3.forward * 10f);

Drag options to blanks, or click blank then click option'

AAddForce

BAddTorque

CSleep

DMovePosition

Attempts:

3 left

💡 Hint

Common Mistakes

Using AddTorque instead of AddForce.

Trying to move Rigidbody by setting position directly.

The AddForce method applies a force to the Rigidbody, causing it to move.

2fill in blank

medium

Complete the code to set the Rigidbody's velocity to move right at 5 units per second.

Unity

rigidbody.[1] = Vector3.right * 5f;

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AangularVelocity

Brotation

Cposition

Dvelocity

Attempts:

3 left

💡 Hint

Common Mistakes

Setting angularVelocity instead of velocity.

Trying to set position directly to move the Rigidbody.

The velocity property sets the Rigidbody's speed and direction.

3fill in blank

hard

Fix the error in applying force to the Rigidbody to make it jump upwards.

Unity

rigidbody.[1](new Vector3(0, 5f, 0), ForceMode.Impulse);

Drag options to blanks, or click blank then click option'

AAddForce

BAddTorque

CMovePosition

DSleep

Attempts:

3 left

💡 Hint

Common Mistakes

Using AddTorque instead of AddForce for jumping.

Not using ForceMode.Impulse for instant force.

Use AddForce with ForceMode.Impulse to apply an instant upward force for jumping.

4fill in blank

hard

Fill both blanks to create a dictionary mapping Rigidbody names to their speeds, filtering only those moving faster than 3 units.

Unity

var speeds = rigidbodies.Where(rb => [2].magnitude > 3f).ToDictionary(rb => [1], rb => [2].magnitude);

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Arb.name

Brb.velocity

Crigidbody

Dvelocity

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names inconsistently.

Using velocity without referencing the Rigidbody variable.

Use rb.name as the key and rb.velocity.magnitude as the value to get speed.

5fill in blank

hard

Fill all three blanks to set the Rigidbody's velocity to zero and disable gravity.

Unity

rigidbody.[1] = Vector3.zero;
rigidbody.[2] = false;
rigidbody.[3]();

Drag options to blanks, or click blank then click option'

Avelocity

BuseGravity

CSleep

DAddForce

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to disable gravity.

Using AddForce instead of Sleep to stop Rigidbody.

Set velocity to zero to stop movement, disable useGravity to stop gravity, and call Sleep() to put Rigidbody to sleep.