# What happens when you jump on a bus?

If the bus is moving forward and you try to leap straight up inside it, you'll be pushed back by the acceleration "force," and if you're on the roof, you'll be pushed back by the air resistance plus the acceleration, landing further back than you would if the vehicle was moving at a steady pace. The exact amount of force you receive depends on how high you were jumping and how long you stayed in the air.

The simple answer to this question is that if you jump on a moving bus, you'll be thrown back. But there are some exceptions to this rule. If the bus is very slow at first and then speeds up as it approaches your height, you'll be able to stay in the air for longer than if the bus was moving faster from the start. And if you jump just before the bus reaches its maximum speed, you won't be thrown back at all.

Here's an example: Let's say you're on the roof of a bus that's traveling 30 miles per hour immediately after starting to jump. If you manage to stay in the air for two seconds, you'll be transported 15 feet away from where the bus was standing still. But if you can stay in the air for four seconds, you'd be sent 105 feet away.

Now let's say the bus starts out with its brakes on and slows down gradually until it's moving only 10 miles per hour.

## Why do you fall backwards when a bus accelerates from rest?

Similarly, as the bus accelerates from rest, the passengers tend to fall back because the inertia of the remainder of the passengers tends to impede the forward motion of the bus. As a result, as the bus rushes ahead, the passenger tends to slump back. The more people on the bus, the faster they will have to be traveling for this behavior to stop happening.

The simple answer is that when a bus accelerates from a stopped position, the front end will rise while the rear end will drop. Since passengers are normally not sitting in the front half of the bus, the majority of them will be falling toward the rear end.

However, there are some exceptions to this rule. If the bus is very full, then the passengers may be leaning forward instead of back. Also, children often fail to understand that it is dangerous to fall over the side of the bus, so they will continue to slide toward the back even after the driver has accelerated away from rest. Finally, an older person might find it difficult to get up again after being slid towards the back of the bus like this. They would probably stay there until someone else got on and forced them the other way.

In all cases, preventing passengers from sliding around in the bus is the job of the driver. Drivers must accelerate quickly but not too quickly or they will cause injury by forcing their passengers too far back.

##### Sammie Slate

Sammie Slate is a creative and innovative person. He has the ability to see inefficiencies in systems and find ways to improve them. Sam likes to work on creative projects like web design, UX design, UI design, etc., where he can also solve problems related to technology use.