What is resultant velocity formula?
Divide the total momentum by the sum of the masses if the two objects stick together after impact. This will give you the resultant velocity of the two objects. In the example above, we would take 50 and divide by the sum of the masses, which is 10, getting a result of 5 meters per second.
What is the resultant velocity?
The resultant velocity of an object is the sum of its individual vector velocities. ■ The sum of the vector forces on an object is equal to the scalar product of the object’s mass and its acceleration vector.
What is relative velocity formula?
This velocity is computed according to the person as an observer inside the object. Mathematically, we nay say that the relative velocity will be the vector difference between the velocities of two objects. The relative velocity of A with respect to B= velocity of the body A – velocity of the body B.
In which direction is the plane moving relative to the ground?
The plane does not move relative to the ground in the direction it points; rather, it moves in the direction of its total velocity (solid arrow).
What is the speed of a plane in a headwind?
Since we have defined a positive velocity to be in the direction of the aircraft’s motion, a headwind is a negative velocity. While the plane is sitting still on the runway, it has a ground speed of 0 and an airspeed of 20 mph [airspeed = ground speed (0) – wind speed (-20) ].
What happens to airspeed when the wind blows?
On a perfectly still day, the airspeed is equal to the ground speed. But if the wind is blowing in the same direction that the aircraft is moving, the airspeed will be less than the ground speed. Suppose we had an airplane that could take off on a windless day at 100 mph (liftoff airspeed is 100 mph).
What is the speed of the wind at liftoff?
At liftoff, the airspeed is still 100 mph, the wind speed is 20 mph and the ground speed will now be 120 mph [airspeed (100) = ground speed (120) – wind speed (20) ]. So the aircraft will have to travel faster (and farther) along the ground to achieve liftoff conditions with the wind at it’s back.
What is the difference between airspeed and ground speed?
Airspeed is the vector difference between the ground speed and the wind speed. On a perfectly still day, the airspeed is equal to the ground speed. But if the wind is blowing in the same direction that the aircraft is moving, the airspeed will be less than the ground speed.