What is the velocity (in m/s) of a 915 kg car initially moving at 26.5 m/s, just after it hits a 125 kg deer initially running at 11.5 m/s in the same direction

Explanation:

Car mass Mc=915kg

Initial velocity of car Uc=26.5m/s

Hit a deer of mass Md=125kg

Initial velocity of deer Ud=11.5m/s

We are going to assume that it is inelastic collision i.e after impact the deer was on the car.

Let the common final velocity be V

Using conservation of linear momentum

Momentum before Collision = momentum after the collision

Mc×Ud+Md×Ud = (Mc+Md)V

915×26.5+125×11.5=(915+125)V

24,247.5+1437.5=1040V

25,685=1040V

V=25,685/1040

V=24.7m/s

The common velocity of the car and the deer is

V=24.7m/s

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2