Getting the Givens

Suppose a free-fall ride at an amusement park starts at rest and is in free fall. Find the velocity of the ride after 2.3 s.

What variable does "2.3 s" go in for?

• Vi (initial velocity)

• Vf (final velocity)

• t (time)

• a (acceleration)

Suppose a free-fall ride at an amusement park starts at rest and is in free fall. Find the velocity of the ride after 2.3 s.

What is the acceleration of the ride while it's in freefall?

• -1.67 m/s^2

• 0 m/s^2

• -9.8 m/s^2

Suppose a free-fall ride at an amusement park starts at rest and is in free fall. Find the velocity of the ride after 2.3 s.

What does the phrase "starts at rest" tell you?

• final velocity (Vf) is zero

• initial velocity (Vi) is zero

• acceleration is 0

• the object doesn't move

Suppose a free-fall ride at an amusement park starts at rest and is in free fall. Find the velocity of the ride after 2.3 s.

What is the unknown?

• distance

• initial velocity (Vi)

• Final velocity (Vf)

• time