An airplane travels southwest a distance of 650 km at a velocity of 430 km/h. How long does the trip take in hours?
1 answer:
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initial velocity is given as 41 km/h at 60 degree North of West
After some time the velocity is given as
now we can find the acceleration
now the distance is given by
so the magnitude of distance is
Answer:
1. When a spring scale is used to do work pulling a cart to the top of an incline, the elastic energy stored in the spring is converted into gravitational potential energy, since the top of an incline has a certain height.
2. The roller coaster get its gravitational potential energy from the kinetic energy it carries when it moves with a certain velocity.
3. Truckers use a ramp because it is easier to load a truck with less applied force. Although the work required is the same, without the ramp the force that they should apply is much greater, hence more difficult.
h is greater than (d x cos(Θ)), hence F2 is smaller than F1.