An earth satellite is orbiting at a distance from the earth’s surface equal to one earth radius (4 000 miles). at this location, the acceleration due to gravity is what factor times the value of gat the earth’s surface?

a. there is no acceleration since the satellite is in orbit.
b. 2
c. 1/2
d. 1/4

The acceleration due to gravity is times the value of g at the Earth’s surface.

(D) is correct option.

Explanation:

Given that,

Radius = 4000 miles

We need to calculate the gravitational force at surface

Gravitational force on the mass m on the surface of the earth

At r = R

....(I)

We need to calculate the gravitational force at height

Gravitational force on a mass m from the center of the earth,

At r = R + R = 2 R

....(II)

Dividing equation (II) by equation (I)

Hence, The acceleration due to gravity is times the value of g at the Earth’s surface.

not moving. pos accel,

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min