Why does water leaking from a moving truck drop down in a straight line while the truck is accelerating?
Understand the Problem
The question is asking about the behavior of water leaking from a moving truck and why it follows a straight line downward despite the truck's acceleration. This involves concepts of physics, particularly Newton's laws of motion and the effects of gravity on the water.
Answer
The water leaks in a straight line as it isn't moving horizontally with the truck.
The water leaks in a straight line as it isn't moving horizontally with the truck.
Answer for screen readers
The water leaks in a straight line as it isn't moving horizontally with the truck.
More Information
When a truck is accelerating, the water droplets, initially at rest relative to the truck, start to move under the influence of gravity. Since gravity acts downwards and the droplets have no horizontal velocity, they drop straight down.
Tips
A common mistake is assuming the water should move with the truck. Without horizontal force, it will simply fall under gravity.
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