Table of Contents
Why does vertically falling rain make slanted?
The increased speed comes from the constant acceleration. Vertically falling rain makes slanted streaks on the side windows of a moving automobile. The car is changing direction and since velocity is a vector, it cannot be a constant velocity. The speed can be constant around a corner, but the velocity cannot.
Why does rain appear to be falling at an angle to a man moving at a uniform speed?
If you move in a direction, object not going in same or opposite direction i.e. trees and rain drops, appear to move in opposite direction. But obviously, rain drops are not stationary, they are falling. But you are not. Hence they will still appear falling.
Why does rain make slanted streaks on the side window of a moving car?
Because the air flow past the window drags the drops horizontally across the glass while at the same time gravity is making the drops run vertically down the glass. The net result is that the drops are moving across the glass in two directions at the time giving you the overall diagonal movement.
What is the reaction counterpart to a force of 1000 N exerted by the Earth on an orbiting communications satellite?
The forces “Earth pulls satellite” and “satellite pulls Earth” are a Newton’s Third Law action/reaction force pair, which means that they must be exactly the same size at all times. Therefore, if “Earth pulls satellite with a force of 1000 N”, the “satellite pulls Earth with a force of 1000 N” is the reaction force.
When it is raining vertically down to a man walking on road the velocity of rain appears?
When it is raining vertically downwards, to a man on the road the velocity of rain appears to be 1.5 times his velocity.
Does rain always fall straight down?
Rain does not fall exactly straight down wind blows it in a different direction so you see rain falling at an angle. It is no different than releasing a helium balloon it never goes exactly straight up the wind blows it away too. Rain is falling at a pretty fast speed that is why you see angle streaks of rain.
When you rub your hands together?
When you rub your hands together, the action of scraping the surface of your skin back and forth against each other causes the molecules in your skin to move a little faster. The faster that molecules move, the higher the temperature. So the friction of rubbing your hands together makes them feel warmer.
Does a stationary object have acceleration?
At one moment, we’re not moving, and a small time later we’re still not moving, so there has not been a change in speed. Therefore, the acceleration has to be zero.
When can a car have no acceleration but still be moving?
Yes, an object that was set in motion in the past by some force, but that is no longer being acted on by a net force, is moving but with zero acceleration, i.e. it is moving at constant velocity.
How many horizontal forces are exerted on the horse?
(a) Looking at the diagram, there are two horizontal forces on the horse, labeled “F” and “P.” The force “F” is the force “ground pushes horse,” and “P” is the force “wagon pulls horse.”
What provides the centripetal force exerted on a satellite in orbit around a planet?
This centripetal force is supplied by gravity – the force that universally acts at a distance between any two objects that have mass. Were it not for this force, the satellite in motion would continue in motion at the same speed and in the same direction.