Unit 2: Lesson 3/4 Physics

A person is sitting in their seat on an airplane that is traveling at 200 m/s. How fast would that person appear to be moving to someone sitting in another seat on the plane?

0 m/s

A person is sitting on the ground while the Earth is traveling around the sun at 30,000 m/s. How fast is that person moving relative to the ground?

0 m/s

A person is walking at 1.3 m/s towards the back of an airplane that is traveling at 200 m/s. How fast would they appear to be moving to someone sitting in another seat on the plane?

1.3 m/s

A person is walking at 2 m/s towards the back of an airplane that is traveling at 200 m/s. How fast would they appear to be moving to someone standing on the ground?

198 m/s

An object is launched horizontally at 89.8 m/s from a height of 32 m. Approximately how long is the object's hang time?

2.6 s

If a person is walking towards the front of a train at 2.3 m/s and the train is moving at 18 m/s, how fast would that person be moving relative to an observer standing on a platform as the train moves past?

20.3 m/s

A person is sitting in their seat on an airplane that is traveling at 200 m/s. How fast would that person appear to be moving to someone standing on the ground?

200 m/s

A person movies at 1.0 m/s towards the front on an airplane that is traveling at 200 m/s. How fast would that appear to be moving to someone standing on the ground?

201 m/s

An object is dropped out of an airplane that is moving horizontally at 350 m/s and is 22,000 m above the ground. Ignoring friction, what will its approximate VF X be on impact?

350 m/s

If a person is walking towards the back of a boat at 1.0 m/s and the boat is moving at 5 m/s, how fast would that person be moving relative to an observer standing on the river bank as the boat moves past?

4 m/s

A projectile is launched at a diagonal angle and is in the air for 17.5 seconds. How long does it take the projectile to reach its apex?

8.75 s

Ignoring friction, what is true for a symmetrical launch at an angle on Earth?

Its apex time is 1/2 of its hang time.

What term best describes the shape of the trajectory that a projectile takes as it moves through the air in free fall?

Parabola.

Ignoring air resistance, what force acts on a projectile and in what direction does it act?

The force of gravity acting on the y axis.